Conflict & Justice

Obama issues ultimatum to Libya

President Barack Obama says Libyan leader Colonel Gaddafi must obey the UN's demands or face military action. Mr Obama said Thursday's UN resolution, which called for an immediate cease-fire, was not negotiable. Anchor Lisa Mullins speaks with Anne-Marie Slaughter, a former adviser to Secretary of State Clinton, and Barry Posen, who directs the Security Studies Program at MIT, about how international military force could be used in Libya.

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