On March 19, 2011, a multi-state coalition began a military intervention in Libya to implement United Nations Security Council Resolution 1973 in response to the 2011 Libyan civil war. Canada's contribution included the deployment of a number of naval and air assets, which were grouped together as part of Operation Mobile. NATO assumed control of military actions on March 25, with RCAF Lieutenant General, Charles Bouchard in command. A no-fly zone was put into effect during the civil war to prevent government forces loyal to Muammar Gaddafi from carrying out air attacks on anti-Gaddafi forces and civilians. The military intervention was enforced by NATO's Operation Unified Protector and included an arms embargo, a no-fly zone and a mandate to use all means necessary, short of foreign occupation, to protect Libyan civilians and civilian-populated areas. On October 28, 2011, Prime Minister Stephen Harper announced that the NATO military mission had ended successfully.