In 1982, the head of state, General Leopoldo Galtieri, authorised the invasion of the British territories of South Georgia and, on 2 April, of the Falkland Islands. The occupation provoked a military response from the United Kingdom leading to the Falklands War. Argentine forces were defeated and surrendered to British troops on 14 June. Street riots in Buenos Aires followed the defeat and the military leadership responsible for the humiliation withdrew. Reynaldo Bignone replaced Galtieri and began to organize the transition to democratic governance.