In Libya, the interim rebel leaders have given an ultimatum to pro-Gaddafi forces to surrender until Saturday or face military force. Mustafa Abdul Jalil, who leads the National Transitional Council, said the ultimatum applied to loyalists of Col. Muammar Gaddafi in his hometown of Sirte and in other towns.The announcement comes after Col Gaddafi's wife and three children fled to neighbouring Algeria. Algeria has defended the move, which the rebels called an act of aggression. Col. Gaddafi's own whereabouts are unknown. Meanwhile fighting continues in Libya, with the rebels trying to overcome pockets of resistance by Gaddafi loyalists, and preparing to advance on Sirte.