Libya's Foreign Minister and member of Muammar al-Qaddafi's inner circle Moussa Koussa defects.

FOX's James Rosen reports from the State Department:

Libya's Rebels continue to lose ground including in the key oil city of Ras Lanouf.

FOX's Steve Harrigan reports from Tripoli:

U.S. Ambassador to the U.N. Susan Rice responded to reports that arming Libya's Rebels could be an option.

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On Capitol Hill, constitutional questions are being asked in the Senate about the President's authority to order air strikes in Libya.

FOX News Radio's Jared Halpern reports from Washington DC: