Steve Rosenberg @BBCSteveR 34m
Large crowd in Donetsk, thousands of proRussia activists marching through the city pic.twitter.com/UAkqTT1jMr

Steve Rosenberg @BBCSteveR 34m
Large crowd in Donetsk, thousands of proRussia activists marching through the city pic.twitter.com/UAkqTT1jMr
Homosexuality is a crime in India too. Of course India is evil and we assume a recipient of your distaste.Being in open opposition to Putin in Russia is dangerous to your health and your ability to stay out of court or jail. So is being homosexual theses days.
shiv, look at THAT crowd!!!Steve Rosenberg @BBCSteveR 34m
Large crowd in Donetsk, thousands of proRussia activists marching through the city pic.twitter.com/UAkqTT1jMr
Steve Rosenberg @BBCSteveR 23m
Policeman running away from the violence at Prosecutor's building in Donetsk tells me “How on earth can we deal with this kind of thing?"
In a move that seemed designed to mock Obama's choice of words, state television lingered on Putin striding with knowing confidence across a vast hall to deliver his verdict on the sanctions to reporters during a visit to neighboring Belarus.
...
"It was handing out those pies on the Maidan that paved the way to the crisis," he said, referring to a visit in which U.S. Assistant Secretary of State Victoria Nuland offered food to anti-government protesters on Kiev's main square in December.
There is no overt sign that the asset freezes and travel bans imposed by the United States and European Union, reinforced by moves by Japan and Canada, are having any effect on Putin.
And Western Kremlin watchers remain deeply uneasy about forecasting just what the president might do next in Ukraine.
He may think he has little reason to be the one to "blink" first; although the annexation of the Crimea peninsula and the massing of Russian troops on the border with Ukraine have left East-West relations more tense than at any time since the Cold War, Putin's popularity has soared in Russia.
A poll on Wednesday showed 82 percent of Russians support the former KGB spy's actions, his highest rating since 2010.
The sanctions were considered so mild in Russia that share prices rose in Moscow when they were announced. Moscow also regards the European Union and the United States as divided over how to handle the crisis, largely because the EU is heavily dependent on Russian oil and gas and has more trade with Moscow.
Some Russians say Putin's position may even be hardening.
"The sanctions have an impact on Putin but not necessarily the impact intended. The West wants to deter him, make him back down, split him from his entourage, set the 'oligarchs' against him, make the Russian people mistrust and topple him," said Dmitry Trenin, head of the Moscow Carnegie Center think-tank.
"In my view it will not work. Sanctions could contribute to Russia being more of an adversary to the U.S. - poorer, less connected to the world and less predictable."
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"What we have noticed is that the fear of sanctions could be even more powerful than the sanctions themselves, the fear of escalation of sanctions," said Antonio Spilimbergo, head of the IMF's mission to Moscow.
"Economically it's very difficult to estimate costs from individual sanctions. But the fear of uncertainty, especially among investors, is having a large effect."
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"At the moment the Russian people are not feeling the impact of sanctions, but Putin knows he cannot allow the economic or political situation to deteriorate beyond a certain point."
Some Western diplomats say they, too, have detected signs that Putin is being increasingly cautious and does not want to take the risk of a military conflict in Ukraine.
Simon Denyer @simondenyer 1h
Riot police were utterly humiliated in #Donestsk today, forced to surrender by mob, led away with heads cowed through angry crowd.
Washington Post @washingtonpost 1h
Putin demands that Ukraine withdraw its troops from eastern Ukraine http://wapo.st/SdJrBj
Putin made the demand in a conversation with German Chancellor Angela Merkel, who called the Russian leader Thursday about the deteriorating security situation in eastern Ukraine. She reached out to Putin a day after Ukraine’s acting president said he had lost control of that portion of his country.
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Putin told her that “it was imperative today to withdraw all military units from the southeastern regions” of Ukraine, and he called for a “broad national dialogue” about reforms to Ukraine’s constitution, the Kremlin said.
But on the ground in Ukraine, any hope of dialogue appeared to be slipping ever further away, as protesters opposed to the Ukrainian government in Kiev stormed the general prosecutor’s office in the eastern Ukrainian regional capital of Donetsk a day after they had taken over the city council building there.
Crowds of separatists massed in front of Donetsk’s police station Thursday, demanding that all pro-Russian activists be freed across eastern Ukraine. They waved Russian flags — and at least one banner depicting World War II-era Soviet leader Joseph Stalin and the Communist hammer and sickle symbol — and played Soviet patriotic songs. Then they turned their attention to the nearby the state prosecutor’s office, where dozens of black-clad riot police with metal shields stood in front of the entrance.
A confrontation quickly ensued, as the riot police attempted to push the crowd away from the entrance with tear gas. The protesters, chanting “fascists,” threw rocks, breaking windows in the office building and demanding that the prosecutor come out. Men in black balaclavas quickly pushed the riot police away from the entrance and forced them to surrender, less than an hour after the pro-Russian protesters had arrived.
If Ukraine’s interim government carries out military operations in the eastern part of the country, it “could lead to disastrous consequences,” the Russian Foreign Ministry warned Thursday.
“We are calling on Kiev, as well as the U.S. and the E.U. indulging it . . . not to commit criminal mistakes and to soberly assess the gravity of possible consequences of using force against the Ukrainian people,” the ministry said in a statement.
In an acknowledgment of his weakness, acting President Oleksandr Turchynov on Wednesday said the Ukrainian government’s goal now was to prevent the agitation from spreading to other areas, and he called for the creation of special regional police forces so that a presidential election could take place May 25 as scheduled.
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Pro-Russian gunmen extended their control over that part of the country Wednesday without encountering resistance.
Ukraine’s acting president, Oleksandr Turchynov, admitted that police and security forces were either “helpless” to prevent the unrest or were actively colluding with separatist rebels.
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Turchynov instructed the governors to try to prevent the threat from spreading to other regions in the central and southern parts of the country.
“Our task is to stop the spread of the terrorist threat first of all in the Kharkiv and Odessa regions,” Turchynov was quoted as saying.
The mayor of Kharkiv, who had been credited with keeping Ukraine’s second-largest city calm, was shot in the back this week.
The Ukrainian government and the United States accuse Russia of fomenting the unrest.
On a lighter note: That is so (b)anal. Putin doesn't like homosexuality and obviously doesn't approve of it both ways. You perhaps just questioned and answered it yourself?Johann wrote:
The Kremlin can't have it both ways.
Wrong.Johann wrote:What buffer states? That's something that emerged only after the Russian and Austro-Hungarian empires collapsed at the end of WWI.
I'm not trying to mock you here, but is there any other way to redo borders ? How exactly does one 'non-unilaterally' do so ? Borders are redone when a significant power imbalance exists. By definition it is always unilateral. You might imagine that some UN-brokered action is multilateral, but it really is not - that's just a cover used to ensure the process works out peaceably. Cases like the Czech-Slovak split are the exception, rather than the rule.Johann wrote:Russia has historically only been isolated when it chose to unilaterally re-do borders in Europe. In the Crimean war they faced France and the Ottoman Empire as well.
But you haven't answered - is NATO, the EU or the US willing to rollback the expansion ? If not, what business do they have to suggest Russia should not expand by the means it chooses ?Johann wrote:There's no question that Moscow has been angry about NATO in the post cold war era, and that this anger was wished away or dismissed as manageable in places like DC, Berlin, Paris and London.
So you are aware that the whole exercise was playing with fire, but choose to understate it. Essentially you chose to add them to NATO, calculating that Russia would accept it as the consequence of the end of the Cold War. It is clear today that you calculated wrong - Russia will use whatever means it can to reverse that.Johann wrote:But why were all of those ex-Warsaw Pact and ex-Soviet states keen to join NATO? In dollar terms the military aid they received was minor compared to Israel, Egypt or even Colombia. What was attractive to eastern European states like Poland and the Baltic Republics that had been invaded and had territory annexed twice by Moscow in living memory is that it was a guarantee against invasion. No one was sure how deep the changes in the Russian political system were, or if they would stick. No one was quite sure how Russia would behave once it recovered. But once your territory was guaranteed by NATO, Russia had to treat you as a peer state because coercive threats were off the table. That is priceless.
This is quite nonsensical. The Germans have threatened the Greeks several times during the PIGS crisis. They didn't literally threaten to send Leo 2s past the Parthenon, but the distinction between persuasion and threat is entirely subjective.Johann wrote:But Russia has to use persuasion rather than threat, and that's fine with me.
The CNN and WH *are* due greater skepticism - they are involved in yet another geopolitical crisis of their own creation, 6000 miles from home, where their own partisanship is plainly visible. The Russians are dealing with their immediate neighborhood regarding territory that they have a legitimate claim upon, doing something that every nation had done in its history.Johann wrote:You are skeptical of CNN and White House narratives, but I don't see passion for RT or the Kremlin POV.
Thats Huge , I wasnt expecting the support would be that large and the divide between West and East of Ukraine would be that great.pankajs wrote:Steve Rosenberg @BBCSteveR 34m
Large crowd in Donetsk, thousands of proRussia activists marching through the city pic.twitter.com/UAkqTT1jMr
UlanBatori wrote:Using our J&K Crowd Estimation Algorithm (where 5 Pakis strolling down a street scratching their musharrafs was described by Indian Express and The Hindu as "20,000 Kashmiris protesting their Freedom") I estimate this crowd to be at least 1,700,345,237.0357
There there SVenkat, you have been given gyaan from Mt Olympus. How perceptive, now be a good SDRE and cower in your dark places.Johann wrote:svenkat wrote:I fully agree with this.The white man has progressed to a post-modernist society wherein passports,visas do not matter.These SDRes with their group think and tribal passions,controlled narrative,caste system,their yearning for a dictator like Modi overlooking the million faultlines within India really do suck.
Svenkat no need to be so local in perspective. The Tea Party sucks and UKIP sucks too, and so do the mainstream politicians that try to sound like them. Religious nationalism is a global phenomenon, and it sucks everywhere.
Actually the US actions (not its propanganda and rhetoric) suggests that it wants to divide Ukraine.Austin wrote: Thats Huge , I wasnt expecting the support would be that large and the divide between West and East of Ukraine would be that great.
Some one in CIA did not do the study well when they planned the event ....ditto goes for Syria , Iraq and Libya
Bloomberg News @BloombergNews 37m
As many as 1,000 gunmen have seized buildings in more than 10 cities in eastern Ukraine: http://bloom.bg/1nM9jRw pic.twitter.com/nycQd1vNQE
Strategically yes the Black Sea Fleet is now fully under Russian control.Virupaksha wrote:Actually the US actions (not its propanganda and rhetoric) suggests that it wants to divide Ukraine.
The way I see it, the only new card in the deck is crimeans joining whole heartedly to russia. That takes out whatever leverage nato had on russia over sevostopol.
Polish President Bronislaw Komorowski in an interview with the Polish news agency PAP spoke about the prospects of Ukraine's membership in the European Union. According to him, only to prepare for accession to the EU country will need at least 10 years, provided that the Ukrainians themselves retain a desire to become members of the European community.
"We entered into the European Union with great difficulties, we were not wanted to see. Poland" made it "in the EU and NATO. As for the EU, it was necessary to work on it for 15 years. Do not see any reason to other countries just like that - if by magic - would have to do it for a year or two, "- said the president of Poland.
According to him, Poland is interested in preserving the openness of the European Union, so no one should talk to the Ukrainians that their country will never join the EU. However, said Komorowski, membership in the European Union should not be taken as a "lifeline."
"There is no reason that the EU and its membership seen as a lifeline that should be thrown immediately because someone is drowning, and pull him aboard," - said the Polish president, stressing that today considering the European perspective of Ukraine, we can talk only on the Association Agreement.
Should the same logic be applicable to say India, Pakistan & Afghanistan ? Say in 10 years or so India performs a miracle economically and we're confident enough of forming a military alliance for the sake of guaranteeing security in our near beyond. Should Pakistan's paranoia be given any respect ? Suraj, the point I'm trying to make is, India as she grows will behave exactly like the US/West is doing today, often hypocritically. We have no skin in the Russia/Crimea/EU game other than to not let it distract from the focus on China.Suraj wrote:Once again, I'll remind you this: you're dealing with the world's largest country, with the biggest nuclear arsenal and a historical paranoia about its borders. Sensibility suggests one should be *very* careful about taking advantage of its temporary weakness. Clearly, NATO compounded stupidity with overconfidence, when they chose to let in those who wanted in. Note, I'm not arguing that they didn't want in. NATO decided poorly when they choose to open the doors.
Untrue if you consider what the Japanese, US and India are planning to do.Theo_Fidel wrote:Didn't China recently unilaterally annex a piece of ocean and islands larger than western Europe? Forcibly occupied the spratlys and shot at random passersby. There has been zero consequences. In fact some have been quietly urging China to 'occupy' NoKo no questions asked.
I can understand Indian reticence to like the EU, but to compare the EU with Russia should be insulting to somebody who argues for liberal secularism and the rule of the law on another thread, in another context. How transparent is the government and judiciary in Russia you think ? Would the pussy riot be sentenced to imprisonment in the EU or India you think ? Would inquiry by independent (and accepted as independent by sympathetic countries like India) Russian institutions be allowed into any of Putin's actions ? I believe what Modi went through was the best thing that happened to him and India.This distaste for Russia is quite odd one must say. Russia gone more than half way in reforming it self for interaction with the west and yet the cold war prism continues going strong. There is almost no difference between Russia and the EU now and yet the temptation to slip into old roles remains.
Untrue, Russia was allowed to purchase offensive military hardware from France, the Mistal. Do you think China would be allowed to ?China gets a pass....
The Black Sea is not a great place to have a large naval fleet. The Dardanelles are a choke point. What the Russkies will do is base their Mistral types there to intimidate and overwhelm the FSU countries that don't have a NATO connection.Hitesh wrote:Crimea is essentially worthless now and the Black Sea Fleet will have to find a new home. For one thing, Crimea would have to find its own source of drinking water somewhere as well as other supplies. It would be too cost prohibitive to resupply by sea and produce drinking water by desalination.
Sevastapol would be only useful for a short period of time before it runs into logistical walls of servicing and maintaining a large naval fleet.
Ukraine’s easternmost regions are slipping from the government’s grasp as separatists take over more official buildings, with the International Monetary Fund warning extra financing may be needed if control of the industrial heartland is lost.
The Washington-based lender’s staff said in an e-mailed report that more financing would be needed if there was “a long-lasting disruption of relations with Russia that depresses exports, investment, and growth or loss of economic control over the east that reduces budget revenue.” Ukraine’s three eastern regions accounted for 30 percent of industrial output last year, according to the IMF.
After Crimeans voted overwhelmingly to join Russia, the bulk of the western media abandoned any hint of even-handed coverage. So Putin is now routinely compared to Hitler, while the role of the fascistic right on the streets and in the new Ukrainian regime has been airbrushed out of most reporting as Putinist propaganda.
So you don't hear much about the Ukrainian government's veneration of wartime Nazi collaborators and pogromists, or the arson attacks on the homes and offices of elected communist leaders, or the integration of the extreme Right Sector into the national guard, while the anti-semitism and white supremacism of the government's ultra-nationalists is assiduously played down, and false identifications of Russian special forces are relayed as fact.
Ukrainian government forces were on Friday said to be conducting operations around the city of Slavyansk in the country's east, with pro-Russia separatists claiming a "large-scale" assault to retake the town was under way.
http://www.aljazeera.com/news/europe/20 ... 43470.htmlUkraine helicopter shot down in Slovyansk
The threat of war in Ukraine is growing. As the unelected government in Kiev declares itself unable to control the rebellion in the country's east, John Kerry brands Russia a rogue state. The US and the European Union step up sanctions against the Kremlin, accusing it of destabilising Ukraine. The White House is reported to be set on a new cold war policy with the aim of turning Russia into a "pariah state".
That might be more explicable if what is going on in eastern Ukraine now were not the mirror image of what took place in Kiev a couple of months ago. Then, it was armed protesters in Maidan Square seizing government buildings and demanding a change of government and constitution. US and European leaders championed the "masked militants" and denounced the elected government for its crackdown, just as they now back the unelected government's use of force against rebels occupying police stations and town halls in cities such as Slavyansk and Donetsk.
"America is with you," Senator John McCain told demonstrators then, standing shoulder to shoulder with the leader of the far-right Svoboda party as the US ambassador haggled with the state department over who would make up the new Ukrainian government.
When the Ukrainian president was replaced by a US-selected administration, in an entirely unconstitutional takeover, politicians such as William Hague brazenly misled parliament about the legality of what had taken place: the imposition of a pro-western government on Russia's most neuralgic and politically divided neighbour.
Putin bit back, taking a leaf out of the US street-protest playbook – even though, as in Kiev, the protests that spread from Crimea to eastern Ukraine evidently have mass support. But what had been a glorious cry for freedom in Kiev became infiltration and insatiable aggression in Sevastopol and Luhansk.
After Crimeans voted overwhelmingly to join Russia, the bulk of the western media abandoned any hint of even-handed coverage. So Putin is now routinely compared to Hitler, while the role of the fascistic right on the streets and in the new Ukrainian regime has been airbrushed out of most reporting as Putinist propaganda.
So you don't hear much about the Ukrainian government's veneration of wartime Nazi collaborators and pogromists, or the arson attacks on the homes and offices of elected communist leaders, or the integration of the extreme Right Sector into the national guard, while the anti-semitism and white supremacism of the government's ultra-nationalists is assiduously played down, and false identifications of Russian special forces are relayed as fact.
The reality is that, after two decades of eastward Nato expansion, this crisis was triggered by the west's attempt to pull Ukraine decisively into its orbit and defence structure, via an explicitly anti-Moscow EU association agreement. Its rejection led to the Maidan protests and the installation of an anti-Russian administration – rejected by half the country – that went on to sign the EU and International Monetary Fund agreements regardless.
No Russian government could have acquiesced in such a threat from territory that was at the heart of both Russia and the Soviet Union. Putin's absorption of Crimea and support for the rebellion in eastern Ukraine is clearly defensive, and the red line now drawn: the east of Ukraine, at least, is not going to be swallowed up by Nato or the EU.
But the dangers are also multiplying. Ukraine has shown itself to be barely a functioning state: the former government was unable to clear Maidan, and the western-backed regime is "helpless" against the protests in the Soviet-nostalgic industrial east. For all the talk about the paramilitary "green men" (who turn out to be overwhelmingly Ukrainian), the rebellion also has strong social and democratic demands: who would argue against a referendum on autonomy and elected governors?
Meanwhile, the US and its European allies impose sanctions and dictate terms to Russia and its proteges in Kiev, encouraging the military crackdown on protesters after visits from Joe Biden and the CIA director, John Brennan. But by what right is the US involved at all, incorporating under its strategic umbrella a state that has never been a member of Nato, and whose last elected government came to power on a platform of explicit neutrality? It has none, of course – which is why the Ukraine crisis is seen in such a different light across most of the world. There may be few global takers for Putin's oligarchic conservatism and nationalism, but Russia's counterweight to US imperial expansion is welcomed, from China to Brazil.
In fact, one outcome of the crisis is likely to be a closer alliance between China and Russia, as the US continues its anti-Chinese "pivot" to Asia. And despite growing violence, the cost in lives of Russia's arms-length involvement in Ukraine has so far been minimal compared with any significant western intervention you care to think of for decades.
The risk of civil war is nevertheless growing, and with it the chances of outside powers being drawn into the conflict. Barack Obama has already sent token forces to eastern Europe and is under pressure, both from Republicans and Nato hawks such as Poland, to send many more. Both US and British troops are due to take part in Nato military exercises in Ukraine this summer.
The US and EU have already overplayed their hand in Ukraine. Neither Russia nor the western powers may want to intervene directly, and the Ukrainian prime minister's conjuring up of a third world war presumably isn't authorised by his Washington sponsors. But a century after 1914, the risk of unintended consequences should be obvious enough – as the threat of a return of big-power conflict grows. Pressure for a negotiated end to the crisis is essential.
Kiev takes control of 10 block posts in Ukraine's Slavyansk, casualties reportedTwo Mi-24 helicopters downed, one Mi-8 damaged in Slavyansk, two military personnel killed, several injured - Ukrainian defense ministry
"Outside of Slavyansk in the Donetsk Region two Ukrainian military Mi-24 helicopters, which were carrying out aerial patrols, were downed. According to preliminary information, the military machines were taken down by unidentified individuals using mobile Zenit rocket systems. As a result, two military personnel were killed and several others have been injured," the Defense Ministry said in a statement.
http://voiceofrussia.com/news/2014_05_0 ... stry-3770/
Acting Ukrainian Interior Minister Arsen Avakov has claimed that 10 federalist block posts in the country's eastern city of Slavyansk have been taken by law enforcers and activists have been taken prisoner during a large special operation on Friday. The active phase of the special operation against federalists in Slavyansk began in the early morning. "Ten block posts have been taken, prisoners have been taken," Avakov said on his Facebook page.
Its not a buffer state if its actually incorporated as Russian territory.Suraj wrote: Wrong. Call it what you want - buffer states, annexation, or anything else. Starting with Peter the Great, Russia has always sought to have a territorial and cultural buffer between itself and western Europe. Eastern Europe is its cultural buffer.
Ah I'm glad you asked - thats where diplomacy comes in. Poor Poland for example was carved up between Russsia, Prussia and Austro-Hungary through mutual agreement in the 18th century.Johann wrote: I'm not trying to mock you here, but is there any other way to redo borders ? How exactly does one 'non-unilaterally' do so ? Borders are redone when a significant power imbalance exists. By definition it is always unilateral. You might imagine that some UN-brokered action is multilateral, but it really is not - that's just a cover used to ensure the process works out peaceably. Cases like the Czech-Slovak split are the exception, rather than the rule.
Eastern Europe is as the name suggests...part of Europe, and that means the lessons of history that led to the formation of the EU and NATO have had an impact.Clearly, NATO compounded stupidity with overconfidence, when they chose to let in those who wanted in. Note, I'm not arguing that they didn't want in. NATO decided poorly when they choose to open the doors.
As much as the history of invasions in Eastern Europe is tragic, the west is merely offering lip service to it; a lot of countries in the world have faced invasion, without ever being offered such a defence treaty. No, this is about western interests, not concern for their past victimization.
Who is 'you'? We're having a discussion as individuals about institutions and states. I am not the NATO Council any more than you are the GoI, and I was not part of that decision making process.....So you are aware that the whole exercise was playing with fire, but choose to understate it. Essentially you chose to add them to NATO, calculating that Russia would accept it as the consequence of the end of the Cold War. It is clear today that you calculated wrong - Russia will use whatever means it can to reverse that.
Once again, I'll remind you this: you're dealing with the world's largest country, with the biggest nuclear arsenal and a historical paranoia about its borders. Sensibility suggests one should be *very* careful about taking advantage of its temporary weakness.
Clearly, NATO compounded stupidity with overconfidence, when they chose to let in those who wanted in. Note, I'm not arguing that they didn't want in. NATO decided poorly when they choose to open the doors.
Europe has enjoyed unprecedented peace over many decades in part by doing its best to discourage territorial conquest and the the militarisation of ethnic conflict.Johann wrote:But you haven't answered - is NATO, the EU or the US willing to rollback the expansion ? If not, what business do they have to suggest Russia should not expand by the means it chooses ?
Theres nothing subjective at all about being hit by a 120mm AP shell. If you feel there’s no difference between that and having your pension cut, and paid leave reduced then we have to accept we live in very different worlds and communication is going to be difficult.This is quite nonsensical. The Germans have threatened the Greeks several times during the PIGS crisis. They didn't literally threaten to send Leo 2s past the Parthenon, but the distinction between persuasion and threat is entirely subjective.Johann wrote:But Russia has to use persuasion rather than threat, and that's fine with me.
BBC Breaking News @BBCBreaking 2h
Russia says Ukraine military operation kills "last hope" for Geneva deal on de-escalating the crisis http://bbc.in/1mjTnlL
Ukrainian government forces have launched an anti-terror operation to retake the rebel stronghold of Slavyansk, with two troops reported dead and others wounded after separatists used grenade launchers to down military helicopters surrounding the city.
Pro-Russian rebels shot down two Ukrainian helicopters, killing two crew, after Ukrainian officials said Slavyansk was "tightly surrounded" and called on separatist leaders to release hostages and surrender.
Russia had vowed "catastrophic consequences" if Kiev conducted a military operation on Thursday, The Voice of Russia has reported.
A third helicopter, believed to be carrying medical staff was hit and one of the crew was wounded as a result, according to Sky News.
Interior Minister Arsen Avakov said the offensive was answered with heavy artillery, with the rebels using grenade and portable anti-aircraft missile launchers to bring down planes.
"As a result of the shooting, two troops from the Ukrainian army were killed," Ukraine's Interior Ministry said in a statement.
Today, Russian President Vladimir Putin's spokesperson accused Kiev of launching a "punitive operation" in south-east Ukraine, destroying the final hope of keeping alive the Geneva agreement designed to defuse the crisis, Russian news agencies reported.
The European Union said it is watching events "with increasing concern".
Vyacheslav Ponomarev, the insurgency-appointed mayor of Slavyansk, said self-defence forces had shot down two helicopters, killing one pilot and capturing the other. Details of these claims could not be independently verified.
Describing the operation as "the active phase of the anti-terrorist operation", Mr Avakov said its goals were simple - "free the hostages, lay down their arms and free administrative buildings, and restore the normal functioning of the town's administration".
On the road leading into Slavyansk from Kramatorsk to the south, trucks were parked sideways to block the road.
The fighting began at 4am (1am GMT), officials and local residents said. Ukrainian troops could be in seen in armoured personnel carriers in a southern suburb of Slavyansk.
An Associated Press cameraman reported seeing black plumes of smoke on the edge of the city. An emergency siren had sounded at dawn.
Read more: Government reintroduces conscription
In-depth: Riot police powerless against pro-Russians in Donetsk
If the Ukrainian military action is confirmed, it would be the first major assault against the insurgents, who have seized police stations and other government buildings in about a dozen cities in southeastern Ukraine.
The violence comes after Mr Putin said yesterday that Ukraine should withdraw its military from the eastern and southern regions of the country.
Just hours later Ukraine’s interim president announced the renewal of military conscription for men aged between 18 and 25 after admitting earlier this week police and security forces had been effectively "helpless" to quell the unrest in the Donetsk and Luhansk regions.
Oleksandr Turchynov said efforts would instead be focused on preventing the instability from spreading to other parts of the country.
A spokesman for Vladimir Putin said the Geneva agreement to defuse the situation in eastern Ukraine was no longer viable after Kiev launched a military operation against the rebel-held city of Slavyansk on Friday.
The Ukrainian military launched its first serious offensive to retake the city, which is being held by pro-Russia militia, early on Friday morning. The rebel militia said Ukrainian troops had launched attacks on several checkpoints. Ukraine's defence minister, Arsen Avakov, said his forces had taken control of nine checkpoints to form a "tight ring" around the city.
Two Ukrainian helicopters were shot down and their pilots killed, both Russian and Ukrainian media reported. One militant was killed and another injured, according to the reports. Ukraine's security service said one helicopter had been brought down by a surface-to-air missile, citing this as evidence that Slavyansk's defenders were not just citizens who had armed themselves.