Britain, Germany and the Netherlands urged their citizens to immediately leave the eastern Libyan city of Benghazi on Thursday in response to what they called an imminent threat against Westerners. European officials told The Associated Press that schools were among the potential targets. The warnings came a day after U.S. Secretary of State Hillary Rodham Clinton testified to Congress about the Sept. 11 attack on the U.S. diplomatic mission in Benghazi that killed four Americans, including the U.S. ambassador to Libya. The warnings also came as French troops battled al-Qaida-linked militants in the West African nation of Mali, and followed...