U.S.-backed Libyan forces said on Wednesday they have taken over Islamic State group’s headquarters in Sirte, the militants’ final bastion in Libya, breaking a stalemate with the help of U.S. airstrikes. The fighters said that they had seized control of the sprawling convention center that was used as Islamic State’s headquarters in the coastal city. They also said that they had seized the city’s main hospital of Ibn Sina from Islamic State militants. Since Aug. 1, U.S. warplanes have launched a series of airstrikes targeting Islamic State positions in the city . The air support came in response to a request for assistance from Libya’s U.N.-brokered government after battles in Sirte stalled. Islamic State militants seized control of the city, the hometown of Libya’s former dictator Moammar Gadhafi, in 2015. Libya descended into […]