In 1965-66, the USSR acted as a peacemaker in the Indo-Pakistani conflict. Prime Minister Alexei Kosygin acted as a mediator on the last day of the meetings in Tashkent on January 10, 1966, where Indian Prime Minister Lal Bahadur Shastri and Pakistani President Ayub Khan signed a declaration formalizing the results of the peace negotiations. The document did not bring lasting peace to the warring parties, as the Kashmir conflict continues to this day. The unexpected death of the Indian leader the day after the signing of the declaration cast a shadow over the event. Indecently, the capital of Uzbekistan still has Shastri Street, where a monument to the Indian ruler stands. Indian delegations regularly visit the website; Prime Minister Narendra Modi visited in 2015. The night after the declaration was signed, the Indian leader died of a heart attack. He fell ill immediately after the talks and attempts by leading cardiologists could not save Shastri`s life. The deal has been criticized in India for not containing a non-war pact or a renunciation of guerrilla warfare in Kashmir. After the signing of the agreement, Indian Prime Minister Lal Bahadur Shastri died mysteriously in Tashkent.  Shastri`s sudden death led to persistent conspiracy theories that he was poisoned.  The Indian government refused to release a report on his death, saying it could harm foreign relations, cause disruption in the country and a breach of parliamentary privileges.
 The Tashkent Conference, under pressure from the United Nations, the United States and the Soviet Union, forced India to abandon the conquered region of Pakistan, India`s occupied land border, and the 1949 armistice line in Kashmir. This eventually led to discontent and protests against Ayub Khan`s leadership. In accordance with the Tashkent Declaration, talks were held at the ministerial level on 1 and 2 March 1966. Despite the fact that these talks were unproductive, diplomatic exchanges continued throughout the spring and summer. No results were achieved from these talks because there were differences of opinion on the Kashmir issue. The news of the Tashkent Declaration shocked the people of Pakistan, who expected more concessions from India than they received. Things deteriorated further when Ayub Khan declined to comment and isolated himself instead of announcing the reasons for signing the agreement. Protests and riots broke out in various parts of Pakistan.  In order to assuage the anger and concerns of the people, Ayub Khan decided to settle the issue on September 14. This conflict between two major regional powers threatened to escalate into a much larger war involving other states. India was threatened by China, which was then an ally of Pakistan.
Beijing has accused Delhi of aggression. The deal has been criticized in India for not containing a non-war pact or a renunciation of guerrilla warfare in Kashmir. Indian Prime Minister Lal Bahadur Shastri and Pakistani President Ayub Khan met in Tashkent on January 4, 1966. The two leaders signed a pact called the Tashkent Declaration of 1966. In India too, people have criticized this agreement because the Pakistani president and the Indian prime minister have not signed a pact on guerrilla warfare in Kashmir. After the day of this statement, Prime Minister Lal Bahadur died of a sudden heart attack. After him, no one accepted this statement, and it was ignored by the next government. A photo in the Soviet magazine Ogonyok, the Indian and Pakistani leaders can be seen holding hands, and next to them stands a smiling Kossygin. «Peace and cooperation – this is what the historic Tashkent Declaration means, and the whole world has heard about it,» the magazine wrote. Next to this text was another, with a photo of Indian Prime Minister Shastri in a black frame. Both the Pakistani president and the Indian prime minister showed respect and praised the Soviet Union`s efforts.
They admired the efforts of the Chairman of the Council of Ministers of the USSR to organize such a pleasant and friendly meeting. The two leaders considered that this declaration would prove to be very fruitful for the future of the region. .