Chapter one is 1949 to 1991, when the Soviet Union broke up, and what we were dealing with, at that point and through those years, was a superpowers' nuclear arms race.
첫 시기는 1949년에서 소련이 붕괴한 1991년까지입니다. 이 시기는 초강대국이 핵무기 경쟁을 했던 시기였지요.