In 1991, President George H.W. Bush and Gorbachev signed START I, a treaty which set the two superpowers the goal of cutting their nuclear arsenals by a third.

1991年，老布什与戈尔巴乔夫签署了第一阶段协议，两个超级大国设定的目标是削减其核武库三分之一的弹头。

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After the detonation of nuclear bombs at the end of world War II, the world moved deeper into the atomic age and the nuclear standoff between the superpowers.

在第二次世界大战末期引爆核弹之后，世界步入原子时代，深深陷入超级大国之间的核对峙之中。

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And as Dmitry said, the United States and Russia, because of our history and because we are nuclear superpowers, have a special obligation.

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He said that the balance of terror between the nuclear superpowers was preferable to trusting the communists: he tended to be against negotiations designed to reduce stocks of arms.

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But the combination of two world wars fought largely on European soil and a 40-year Cold War changed all that, making much of Europe a pawn between two nuclear superpowers.

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