After the guns fell silent in May 1945, the USSR resumed its clandestine warfare against the western democracies. Stalin installed secret police services in the satellite countries of Central and Eastern Europe. Trained by his NKVD officers of the Polish UB, the Czech StB, the Hungarian AVO, Romania's Securitate, Bulgaria's KDS, Albania's Sigurimi and the Stasi of the German Democratic Republic spied on and ruthlessly repressed their fellow citizens on the Soviet model. When the resultant hatred exploded in uprisings they were put down by brutality, bloodshed and Soviet tanks. Not so obvious...