One morning in 1961, the residents of East Berlin found themselves cut off from family, friends and jobs in the West by a tangle of barbed wire that ruthlessly cut a city of four million in two. Within days the barbed wire became a 103-mile-long wall guarded by three hundred watchtowers. A physical manifestation of the Cold War that would stand for nearly thirty years, the Berlin Wall was the fault line between East and West on which rested the fate...