After World War II, defeated Germany was divided into Soviet, American, British and French zones of occupation. The city of Berlin, though technically part of the Soviet zone, was also split, with the Soviets taking the eastern part of the city. After a massive Allied airlift in June 1948 foiled a Soviet attempt to blockade West Berlin, the eastern section was drawn even more tightly into the Soviet fold. Over the next 12 years, cut off from its western counterpart and basically reduced to a Soviet satellite, East Germany saw between 2.5 million and 3 million of its citizens head to West Germany in search of better opportunities. By 1961, some 1,000 East Germans–including many skilled laborers, professionals and intellectuals–were leaving every day.