Muammar Gaddafi broke his silence late Tuesday with audio remarks aired on the radio. Gaddafi admitted to retreating from his Tripoli compound, which has fallen to the rebels, but said that it was a “tactical move.” He called on Libyans to “sweep through Tripoli and comb it for traitors.” Gaddafi also vowed to fight to the death, promising “martyrdom or victory.” Gaddafi’s whereabouts are unknown; there is some speculation that he may head toward his hometown of Sirte, which is still resisting the rebels.