The treaty came into force on August 8, 1973 and expired on July 1, 1974. Under the agreement, UNHCR oversaw the repatriation of citizens from Bangladesh and Pakistan. According to the UN, 121,695 Bengalis have been transferred from Pakistan to Bangladesh. Among them are senior Bengal officials and the military. 108,744 civilians and non-Bengali officials were transferred from Bangladesh to Pakistan.  India released 6,500 Pakistani PoWs, most of whom were transported by train to Pakistan. In 1974, General Niazi was the last Pakistani officer to be symbolically returned by the Wagah border.  Delhi Agreement, www.genocidebangladesh.org/?p-196 Geoffrey Robertson QC, who served as president of the Sierra Leon War Crimes Tribunal in a 2015 report entitled „REPORT ON THE INTERNATIONAL CRIMES TRIBUNAL OF BANGLADESH,“ rightly set the context for the tripartite agreement by declaring that the Bangladeshi Holocaust came before the world had the will to intervene in distant countries of which the great powers were aware. Foreign Ministry spokesman Abdul Basit commented on the request that the problem be resolved under a tripartite agreement signed by Bangladesh, India and Pakistan in April 1974. The 195 Pakistani soldiers against whom Bangladesh had gathered concrete evidence of genocide can still be charged at the International Criminal Court in The Hague, regardless of what was mentioned in the 1974 Delhi Agreement, which states that Pakistan acquitted these criminals of prosecution.
A. Dirk Moses, War Crimes/Genocide Trials for Pakistani Soldiers in Bangladesh, 1971-1974, the United Nations, Humanitarianism and Human Rights, 2010. Howard S. Levie, „The Indo-Pakistani Agreement of August 28, 1973“ The American Journal of International Law, Vol. SaminaFakhruddin, „Pakistan`s relationship with India and Bangladesh,“ Pakistan Horizon, Vol. XXVII No.2, 1974. The Delhi Agreement was a trilateral agreement signed on 28 August 1973 between India, Pakistan and Bangladesh. and only ratified by India and Pakistan.
 It allowed the repatriation of prisoners of war and interned officials held in the three countries after Bangladesh`s war of liberation in 1971. The agreement was criticized because Pakistan did not repatriate Urdu spokesmen to Bangladesh and failed to bring to justice 195 high-ranking military personnel accused of being admitted to the war.  After the surrender of the Pakistani army, nearly 93,000 Pakistani soldiers and civilians were transferred to India as prisoners of war. On 21 December 1971, the UN Security Council adopted a resolution calling on the parties to respect the Geneva Convention and not to bind conditions to the repatriation of prisoners of war. Article 118 of the Geneva Convention (1949) stipulates that prisoners of war must be repatriated immediately after the end of hostilities. It also provides that the authorities are required to draw up a repatriation plan. India stated that the Pakistani army had surrendered to the joint command of India and Bangladesh and that it was therefore not India`s jurisdiction to recover the prisoners of war themselves. On the other hand, Sheikh Mujib-your-Rahman had stated that he would not participate in any bilateral or trilateral meetings unless Bangladesh had been recognized by Pakistan. On 28 August 1973, India and Pakistan signed an agreement in Delhi for the repatriation of 93,000 civilian and military prisoners to Pakistan. Bengalis in Pakistan should be repatriated to Bangladesh. Mujib your Rahman clung to his request to try 195 war criminals. Bhutto insisted that Pakistan would not recognize Bangladesh until all prisoners of war were released.