WASHINGTON - The Education Department has advised school leaders nationwide to watch for people spying on their buildings or buses to help detect any possibility of terrorism like the deadly school siege in Russia. The warning follows an analysis by the FBI (news - web sites) and the Homeland Security Department of the siege that killed nearly 340 people, many of them students, in the city of Beslan last month. "The horror of this attack may have created significant anxiety in our own country among parents, students, faculty staff and other community members," Deputy Education Secretary Eugene Hickok said in...