United Nations Security Council Resolution 1973 in the context of "Libyan Civil War (2011)"

The Libyan Civil War, also known as the First Libyan Civil War and Libyan Revolution, was an armed conflict in 2011 in the North African country of Libya which was fought between forces loyal to Colonel Muammar Gaddafi and rebel groups attempting to oust his government. The war was preceded by protests in Zawiya on 8 August 2009 and finally ignited by protests in Benghazi beginning on 15 February 2011, which led to clashes with security forces who fired on the crowd. The protests escalated into a rebellion spreading across the country, with the forces opposing Gaddafi establishing an interim governing body, the National Transitional Council.

The United Nations Security Council passed an initial resolution on 26 February, freezing the assets of Gaddafi and his inner circle and restricting their travel, and referred the matter to the International Criminal Court for investigation. In early March, Gaddafi's forces rallied, pushed eastwards and re-took several coastal cities before reaching Benghazi. A further UN resolution authorised member states to establish and enforce a no-fly zone over Libya, and to use "all necessary measures" to prevent attacks on civilians, which turned into a bombing campaign by the forces of NATO against Libyan military installations and vehicles. The Gaddafi government then announced a ceasefire, but fighting and bombing continued. Throughout the conflict, rebels rejected government offers of a ceasefire and efforts by the African Union to end the fighting because the plans set forth did not include the removal of Gaddafi.

On 19 March 2011, a NATO-led coalition began a military intervention into the ongoing Libyan Civil War to implement United Nations Security Council Resolution 1973 (UNSCR 1973). The UN Security Council passed the resolution with ten votes in favour and five abstentions, with the stated intent to have "an immediate ceasefire in Libya, including an end to the current attacks against civilians, which it said might constitute 'crimes against humanity' ... [imposing] a ban on all flights in the country's airspace — a no-fly zone — and tightened sanctions on Muammar Gaddafi's government and its supporters."

The initial coalition members of Belgium, Canada, Denmark, France, Italy, Norway, Qatar, Spain, UK and US expanded to nineteen states, with later members mostly enforcing the no-fly zone and naval blockade or providing military logistical assistance. The effort was initially led by France and the United Kingdom, with command shared with the United States. Italy only joined the coalition on the condition that NATO took on overall leadership of the mission instead of individual countries. NATO took control of the arms embargo on 23 March, named Operation Unified Protector. An attempt to unify the military command of the air campaign first failed over objections by the French, German, and Turkish governments. On 24 March, NATO agreed to take control of the no-fly zone, while command of targeting ground units remained with individual coalition forces. The handover occurred on 31 March 2011.

Operation Ellamy was the codename for the United Kingdom participation in the 2011 military intervention in Libya. The operation was part of an international coalition aimed at enforcing a Libyan no-fly zone in accordance with the United Nations Security Council Resolution 1973 which stipulated that "all necessary measures" shall be taken to protect civilians. The coalition operation was designated by NATO as Operation Unified Protector, by the US as Operation Odyssey Dawn. The Canadian participation as Operation Mobile and the French participation as Opération Harmattan. It was confirmed in December 2011 that the cost of the operations was £212m – less than was estimated, including £67m for replacing spent munitions, is all expected to be met from the Treasury reserve.

The no-fly zone was proposed during the Libyan Civil War to prevent government forces loyal to Muammar Gaddafi from carrying out air attacks on anti-Gaddafi forces. Several countries prepared to take immediate military action at a conference in Paris on 19 March 2011.

Operation Unified Protector was a NATO operation in 2011 enforcing United Nations Security Council resolutions 1970 and 1973 concerning the Libyan Civil War and adopted on 26 February and 17 March 2011, respectively. These resolutions imposed sanctions on key members of the Gaddafi government and authorized NATO to implement an arms embargo, a no-fly zone and to use all means necessary, short of foreign occupation, to protect Libyan civilians and civilian populated areas.

The operation started on 23 March 2011 and gradually expanded during the following weeks, by integrating more and more elements of the multinational military intervention, which had started on 19 March in response to the same UN resolutions. As of 31 March 2011 it encompassed all international operations in Libya. NATO support was vital to the rebel victory over the forces loyal to Gaddafi. The operation officially ended on 31 October 2011, after the rebel leaders, formalized in the National Transitional Council, had declared Libya liberated on 23 October.