U.S. intelligence source said the CIA is in the country to increase the "military and political understanding" of the situation.

 The NATO mission -- called Operation Unified Protector-- includes an arms embargo, a no-fly zone and "actions to protect civilians and civilian centers," the alliance said Thursday.It follows a U.N. Security Council resolution allowing member states to take all necessary measures -- with the exception of foreign occupation -- to protect civilians under the threat of attack in Libya.Over the weekend, CNN reported that rebels had taken al-Brega, Ras Lanuf and Bin Jawad and reached a town just east of Sirte. But in the last three days, opposition fighters have been pushed back eastward.Hoekstra: What may be next in Libya Libyan opposition speaks out on tactics Anderson: Gadhafi opposition badly armed Libyan foreign minister resignsRebel forces -- hampered by a lack of organization, training...

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