rebels. Eastern Libya, centred on the port city of Benghazi, was said to be firmly in the hands of the opposition, while Tripoli and its environs remained in dispute. Pro-Gaddafi forces were able to respond militarily to rebel pushes in Western Libya and launched a counterattack along the coast toward Benghazi, the de facto centre of the uprising. The town of Zawiya, 48 kilometres (30 mi) from Tripoli, was bombarded by air force planes and army tanks and seized by Jamahiriya troops, "exercising a level of brutality not yet seen in the conflict."
In several public appearances, Muammar Gaddafi threatened to destroy the protest movement, and Al Jazeera and other agencies reported his government was arming pro-Gaddafi militiamen to kill protesters and defectors against the regime in Tripoli. Organs of the United Nations, including United Nations Secretary General Ban Ki-moon and the United Nations Human Rights Council, condemned the crackdown as violating international law, with the latter body expelling Libya outright in an unprecedented action urged by Libya's own delegation to the UN. The United States imposed economic sanctions against Libya, followed shortly by Australia, Canada and the United Nations Security Council, which also voted to refer Gaddafi and other government officials to the International Criminal Court for investigation.
On 17 March 2011 the United Nations Security Council passed Resolution 1973 with a 10–0 vote and five abstentions. The resolution sanctioned the establishment of a no-fly zone and the use of "all means necessary" to protect civilians within Libya.
Shortly afterwards, Libyan Foreign Minister Moussa Koussa stated that "Libya has decided an immediate ceasefire and an immediate halt to all military operations".
On 19 March, the first Allied act to secure the no-fly zone began when French military jets entered Libyan airspace on a reconnaissance mission heralding attacks on enemy targets
