The Indo-Pakistani War of 1971 was a conflict between India and Pakistan that lasted from December 3, 1971, to December 16, 1971. The war was primarily triggered by the struggle for independence in East Pakistan, which sought to become the independent nation of Bangladesh. The conflict arose after widespread political and social unrest in East Pakistan, leading to a brutal crackdown by the Pakistani military. India intervened in support of the independence movement, resulting in a swift military campaign. The war concluded with a decisive victory for India and the surrender of Pakistani forces in East Pakistan, leading to the creation of Bangladesh as a new nation.