The Libyan Civil War began on 15 February 2011 as a civil protest and later evolved into a widespread uprising. However, by 19 March, Libyan forces under Colonel Muammar Gaddafi were on the brink of a decisive victory over rebels in Libya's east. That day, leading NATO members acted on United Nations Security Council Resolution 1973 which authorized member states "to take all necessary measures... to protect civilians and civilian populated areas under threat of attack in the Libyan Arab Jamahiriya, including Benghazi, while excluding an occupation force".