["History \/ United States \/ General","Political Science \/ American Government \/ National","Political Science \/ History & Theory","Cold War.","Espionage, American;History;20th century.","Espionage, Soviet;History.","Cold War.","Espionage, American;History;20th century.","Espionage, Soviet;History.","History \/ United States \/ General","Political Science \/ American Government \/ National","Political Science \/ History & Theory"]