http://www.globalsecurity.org/military/world/war/indo-pak_1971.htm War, India and Pakistan, 1971, also known as the third India-Pakistan war, which began in December 1971. This war was very related to Bangladesh War of Independence. India, Bangladesh and the international community generally believed that the Pakistan air strikes 11 indonesia military spot in December 3, 1971. The Pakistani army was surrendered on December 16, 1971, after the end of the war, Bangladesh is also out of Pakistan,and became an independent country. Pakistani army kill lots of people in East Bengal, causing about 10 million people escape from East Pakistan to India for refuge. This war causes Bangladesh out of Pakistan. In October 1975, Bangladesh and Pakistan established for a formal diplomatic relationship.