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.  The agreement was negotiated by Soviet Prime Minister Alexei Kosygin, who had invited the parties to Tashkent. The parties agreed to remove all armed forces from positions that were occupied before August 5, 1965; Renewing diplomatic relations; and to discuss economic, refugee and other issues. The agreement was criticized in India because it contained no war pact or renouncement of guerrilla aggression in Kashmir. 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 accordance with Tashkent`s statement, ministerial talks took place on 1 and 2 March 1966. Despite the fact that these talks were unproductive, diplomatic exchanges continued in the spring and summer. The results of these discussions were not obtained due to differences of opinion on the Kashmir issue.
The news of Tashkent`s statement shocked the people of Pakistan, who expected India to make more concessions than they got. Things got even worse when Ayub Khan refused to speak and went to solitary confinement instead of announcing the reasons for signing the agreement. Protests and riots took place at various locations in Pakistan.  To dispel the anger and concerns of the people, Ayub Khan decided to take the matter before the people on 14 January 1966. This is the difference with Tashkent`s statement that eventually led to the impeachment of Zulfikar Ali Bhutto from the Ayub government, which later founded his own party, the Pakistan People`s Party. Although Ayub Khan was able to satisfy the concerns of the people, Tashkent`s declaration significantly tarnished his image and was one of the factors that led to his downfall.  अजीज अहमद को शास्त्री की खबर मिली. वो खुशी से झूमता हुआ भुट्टो के कमरे में पहुंचा और कहा- वो `हरा*` मर गया. भुट्टो ने पूछा- दोनों में से कौन? हमारा वाला या उनका वाला? भारत का यह दुर्भाग्य ही रहा कि ताशकंद समझौते के बाद वह इस छोटे क़द के महान पुरुष के नेतृत्व से हमेशा-हमेशा के लिए वंचित हो गया.