 Complete the following phrase:  In August, rebel forces launched an offensive on the government-held coast of Libya, backed by a wide-reaching NATO bombing campaign, taking back territory lost months before and ultimately capturing the capital city of Tripoli, while Gaddafi evaded capture and loyalists engaged in a rearguard campaign. On 16 September 2011, the National Transitional Council was recognised by the United Nations as the legal representative of Libya, replacing the Gaddafi government. Muammar Gaddafi evaded capture until 20 October 2011, when he was 