translation.en: 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.
translation.zh: 第一个时期从1949年到 1991年苏联解体 我们要关注的是在这些年间 有一场超级大国之间的核军备竞赛 这场核军备竞赛最主要的特点就是