In 1965-66, the USSR played the role of peacemaker in the conflict between India and Pakistan. Prime Minister Alexei Kosygin mediated the last day of the 10 January 1966 meetings in Tashkent, where Indian Prime Minister Lal Bahadur Shastri and Pakistani President Ayub Khan signed a declaration formalizing the outcome of the peace negotiations. The document did not bring lasting peace to the belligerents, as the Kashmir conflict continues to this day. The unexpected death of the Indian head of state, 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 guide stands. Indian delegations visit the site regularly; Prime Minister Narendra Modi visited him in 2015. 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 Soviets, represented by Prime Minister Alexei Kosygin, led Indian Prime Minister Lal Bahadur Shastri and Pakistani President Muhammad Ayub Khan.   Despite this tragic event, Tashkent`s declaration was considered a great success of Soviet diplomacy in the settlement of international conflicts. The declaration was not well received in India. The agreement was approved by the Indian National Congress Party and the Communist Party of India, but opposition parties said the peace treaty had demoralized the country.
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.   After the independence of British rule, India remained a permanent threat to Pakistan`s security when congressional leaders soon began to reverse the division. India illegally conquered many areas of Pakistan by hooks or crooks and one of these controversial territories was the state of Kashmir. The first war for Kashmir took place in 1947-1948. The Second War took place in 1965 because of the same question, which was expressive of the inherent hostility between the neighbours. The war began on September 6, when India took Pakistan by crossing the international border in the darkness of the night. In seventeen days, thousands of people have been deployed on both sides of the Earth. The United States and the Soviet Union have forced the United Nations to play its part in the peaceful settlement and to compel it to resolve all problems between the two countries amicably, as war undermines world peace.
The efforts of the United Nations brought peace because the two countries agreed to a ceasefire.