 On 17 March 2011., the UN Security council adopted the United Nations Security Council resolution 1973 which legitimised the military operation against the pro-Gadaffi regime - with 10 votes in favour, 0 against and 5 abstentions, a no-fly zone was established over the whole of Libya with the United Nations Security Council resolution 1973.Despite that, both pro-Gadaffi and pro-rebel air forces continued their sorties for the next two days, launching multiple airstrikes up until the night of March 19, when a no-fly zone was finally implemented by NATO forces, grounding both rebel and pro-Gadaffi fighter jets from then on.In the late afternoon of 19 March, first coalition airstrikes were launched against the Gadaffi regime, with French fighter jets bombing pro-Gadaffi tank columns at the entrance to Benghazi, stopping their offensive against rebel forces in Benghazi.