The agreement was criticized in India because it contained no war pact or renouncement of guerrilla warfare in Kashmir. After the signing of the agreement, Indian Prime Minister Lal Bahadur Shastri mysteriously died in Tashkent.  Shasti`s sudden death led to persistent conspiracy theories that he was poisoned.  The Indian government refused to downgrade a report on his death claiming that it could harm foreign relations, cause disruption in the country and a violation of parliamentary privileges.  Lal Bahadur Shastri (1904-1966), Prime Minister of India An agreement signed by Indian Prime Minister Lal Bahadur Shastri and Pakistani President Ayub Khan in the Soviet city of Taschkent to end Pakistan`s Second Indopa War on Kashmir. The two countries agreed not only to withdraw their troops from the territory of the other region and to recover their prisoners of war, but also to begin to normalize their diplomatic relations. Unfortunately, the beginning of Indo-Pakistani friendly relations was made more difficult by Shastri`s death a few hours after the signing of the agreement. The agreement has done little to ease the deep hostility between the two countries since independence in 1947 and did not prevent the outbreak of new hostilities in 1970. Indian Prime Minister Lal Bahadur Shastri and Pakistani President Ayub Khan met on 4 January 1966 in Tashkent. The two heads of state and government signed a pact called the Tashkent Declaration of 1966.
The Tashkent Declaration was a peace agreement between India and Pakistan, signed on 10 January 1966, which resolved the 1965 Indo-Pakistan war. Peace was achieved on 23 September by the intervention of the external powers that pushed the two nations to the truce, lest the conflict intensify and attract other powers.   In India, the people also criticized the agreement because the Pakistani president and the Prime Minister of India did not sign a guerrilla pact in Kashmir. After the day of this declaration, Prime Minister Lal Bahadur died on the day of a sudden heart attack. After him, no one accepted this statement, and it was ignored by the next government. In accordance with Tashkent`s statement, ministerial talks were held on 1 and 2 March 1966. Despite the fact that these talks were unproductive, diplomatic exchanges continued in the spring and summer.