This chapter begins by discussing the breakup of Germany into several parts, the expulsion of the Germans from Eastern Europe, and the establishment of Communist systems, resulting in a huge mass flight. It explains the importance of Berlin as the escape hatch from Stalin's empire. It narrates the refugees' experiences during their migration, particularly the full interrogation in order to identify a valuable source to provide economic and political intelligence or a security suspect. It discusses that these interrogations served the West's two main policies designed to weaken the East German economy: embargo and induced defection. It defines defection as a product of the Soviet system itself, which is a natural consequence of disaffection with Communist totalitarianism and the wretchedness of life in Stalin's USSR. It also explains the reason behind the adoption of the policy of induced defection by the American and British intelligence services.