Agency Warns of Terror Plot On guard: A machine gun in front of a sign pointing the way for "other visitors" at the trial on Tuesday in Frankfurt of five Algerians charged with plotting an attack in Strasbourg, France, last Christmas. The men are believed to belong to the Qaida terrorist network. (Photo: AP) By Udo Ulfkotte FRANKFURT. German law enforcement officials have launched an intensive search for three people who they suspect are part of a three-country operation to seize hundreds of hostages in an attempt to free members of the Qaida terrorist network being held in Europe, according...