Pakistans Lt. Gen A. A. K. Niazi signs the instrument of surrender on 16 December, surrendering his forces to Lt. Gen Jagjit Singh Aurora commanding the Mitro Bahini (Allies).
On 16 December 1971, Lt. Gen A. A. K. Niazi, CO of Pakistan Army forces located in East Pakistan signed the instrument of surrender. At the time of surrender only a few countries had provided diplomatic recognition to the new nation. Bangladesh sought admission in the UN with most voting in its favor, but China vetoed this as Pakistan was its key ally.[48] However, the United States was one of the last nations to accord Bangladesh recognition.[49] To ensure a smooth transition, in 1972 the Simla Agreement was signed between India and Pakistan. The treaty ensured that Pakistan recognized the independence of Bangladesh in exchange for the return of the Pakistani PoWs. India treated all the PoWs in strict accordance with the Geneva Convention, rule 1925[citations needed]. It released more than 90,000 Pakistani PoWs in five months[50].
Further, as a gesture of goodwill, nearly 200 soldiers who were sought for war crimes by Bengalis were also pardoned by India. The accord also gave back more than 13,000 km² of land that Indian troops had seized in West Pakistan during the war, though India retained a few strategic areas;[51] most notably Kargil (which would in turn again be the focal point for a war between the two nations in 1999). This was done as a measure of promoting "lasting peace" and was acknowledged by many observers as a sign of maturity by India. But some in India felt that the treaty had been too lenient to Bhutto, who had pleaded for leniency, arguing that the fragile democracy in Pakistan would crumble if the accord was perceived as being overly harsh by Pakistanis.