The declaration concluded only hostilities between India and Pakistan at the time, but it still left open the Kashmir issue between the two sides, as neither side has been able to reach an agreement to date. The Tashkent Declaration was a peace agreement signed on January 10, 1966 between India and Pakistan, which resolved the Indo-Pakistani War of 1965. Peace had been achieved on September 23 thanks to the intervention of external powers that pushed the two nations to a truce, fearing that the conflict would escalate and attract other powers.   Even after more than five decades, the death of former Indian Prime Minister Lal Bahadur Shastri remains full of mysteries. During the 1965 Indo-pak war, India had built its military capabilities under the leadership of Shastri and the UN had passed a resolution calling on the two countries to sign a ceasefire agreement. At that time, Russia allied with India offered to play a mediating role in the negotiations and Lal Bahadur Shastri and ayub Khan, then Pakistani Prime Minister, signed a peace agreement in Tashkent (then in Russia) that ended the 17-day war, known as the Tashkent Agreement. Here is the controversy surrounding the death of the late Indian prime minister that inspired the movie The Tashkent Files – The deal was criticized in India for not containing a non-war pact or 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 stubborn conspiracy theories that he was poisoned.  The Indian government refused to downgrade a report on his death claiming it could damage foreign relations, cause disruption in the country and a breach of parliamentary privileges.  Talks began on January 3, 1966 in Tashkent, with kossygin shastri and Ayub meeting separately before subsequent summits. Earlier, shortly after the ceasefire, the Security Council had adopted a resolution calling for the withdrawal of all armed personnel from positions they held before 5 August 1965.
Kossygin stressed in the implementation of this resolution, in which the USSR participated with other powers. When Indian Prime Minister Kossygin said that India would in no way abandon the Haji Pir passport, as it is of great strategic importance and was won “after a heavy casualty of our brave military personnel”, Kossygin replied that if India did not withdraw from Haji Pir (and Tithwal), Pakistan would not withdraw from Chhamb and other Indian territories occupied by Pakistan and there would be no agreement. . . .