The Tashkent conference, under United Nations, American and Soviet pressure, compelled India to give away the conquered region in Pakistan occupied national boundary of India and the 1949 ceasefire line in Kashmir.
The agreement was criticized in India because it did not contain a no-war pact or any renunciation of guerrilla warfare in Kashmir. After signing the agreement, Lal Bahadur Shashtri the Indian Prime Minister then died mysteriously at Tashkent. In accordance with the Tashkent Declaration, talks at the ministerial level were held on 1 and 2 March 1966. Despite the fact that these talks were unsuccessful, diplomatic exchange continued throughout the spring and summer. No result was achieved out of these talks, as there was a difference of opinion over the Kashmir issue. Euphoria had built up during the 1965 war, which had led to the development of a public perception that Pakistan was going to win the war. News of the Tashkent Declaration shocked the people who were expecting something quite different. Things further worsened as Ayub Khan refused to comment and went into seclusion instead of taking the people into confidence over the reasons for signing the agreement. Demonstrations and rioting erupted at various places throughout the country. In order to dispel the anger and misgiving of the people, Ayub Khan decided to lay the matter before the people by addressing the nation on January 14. It was the difference over Tashkent Declaration, which eventually led to the removal of Z. A. Bhutto from Ayub’s government, who later on launched his own party, called the Pakistan People’s Party. Despite the fact that Ayub Khan was able to satisfy the misgiving of the people, there is no doubt that the Tashkent Declaration greatly damaged the image of Ayub Khan, and became one of the many factors that led to his downfall.