"We must end the scourge of piracy" says Hillary Clinton after a new wave of attacks off Somalia

A U.S. Navy warship has arrived off Somalia, where the captain of a U.S.-flagged freighter has been taken hostage by pirates. The Maersk Alabama was hijacked on Wednesday, but the crew of 20 Americans is reported to have retaken control of the vessel and are trying to negotiate their captain's release. US Secretary of State Hillary Clinton has expressed deep concern over the seizure, the latest in a string of pirate attacks in the area.