US Secretary of State Hillary Clinton is in Libya on an unannounced visit aimed at showing support for the Libyan people and building ties. Mrs Clinton is in the capital, Tripoli, for only a few hours - the first US cabinet-level official to visit since Col Muammar Gaddafi was ousted.
Her visit comes as fierce fighting erupted again in the former Libyan leader's hometown of Sirte. The coastal city, east of Tripoli, is the last stronghold of his fighters.
bbc