Following Pakistan's defeat in the Bangladesh Liberation War, President Zulfikar Ali Bhutto released Bangladeshi politician Sheikh Mujibur Rahman (pictured) from prison in response to international pressure.

The Pakistani Instrument of Surrender was a legal document signed between India and Pakistan to end the Bangladesh Liberation War and the Indo-Pakistani War of 1971. Per the trilateral agreement, the Pakistani government surrendered the Armed Forces Eastern Command, thereby enabling the establishment of the People's Republic of Bangladesh over the territory of East Pakistan. The document was signed by India's Lt. Gen Jagjit Singh Aurora and Pakistan's A. A. K. Niazi, and led to the surrender of 93,000 Pakistanis — the world's largest surrender in terms of number of personnel since World War II. Despite the agreement, Pakistan did not formally recognize Bangladeshi sovereignty until February 1974.

The Bangladesh Liberation War, also known as the Bangladesh War of Independence, was an armed conflict sparked by the rise of the Bengali nationalist and self-determination movement in East Pakistan, which resulted in the independence of Bangladesh. The war began when the Pakistani military junta based in West Pakistan—under the orders of Yahya Khan—launched Operation Searchlight against East Pakistanis on the night of 25 March 1971, initiating the Bangladesh genocide.

Zulfikar Ali Bhutto NI was a Pakistani barrister, politician and statesman who served as the fourth president of Pakistan from 1971 to 1973 and later as the ninth prime minister of Pakistan from 1973 until his overthrow in 1977. He was also the founder and first chairman of the Pakistan People's Party (PPP) from 1967 until his execution in 1979.

Sheikh Mujibur Rahman, also known by the honorific Bangabandhu, was a Bangladeshi politician, revolutionary, statesman and activist who was the founding president of Bangladesh. As the leader of Bangladesh, he led the country as its president and prime minister from 1972 until his assassination in a coup d'état in 1975. His nationalist ideology, socio-political theories, and political doctrines are collectively known as Mujibism.