A Sharma wrote:1965 war:The Chinese bluff
While continuing to squeeze India on Kashmir, the Western Powers were getting uncomfortable with the strange situation. They were supplying armaments to Pakistan, which in turn was flirting with Communist China.
In a long letter to India's chief ministers on May 23, 1963, Prime Minister Jawaharlal Nehru lucidly pointed out: 'Pakistan has been and continues to be a headache. By a curious quirk of circumstance this has got tied up with the Chinese menace. Surely, there must be few instances in history of a country tying itself up with military alliances against some of the countries, in the present case, Communist countries, and then suddenly turning over and coming to an understanding with one of these Communist countries.'
This is the most important information. Indian leadership and elite could not figure out that this could not have happened without the (secret)support of the western powers.