So he's not Jimmy Carter after all. Barack Obama was in Prague this week to sign a strategic arms treaty with Russia's Dmitry Medvedev. Next week the US president plays host to 50 world leaders to discuss strengthening arrangements for nuclear security. In between times, he published a new military strategy that significantly narrows the circumstances in which the US would use its nuclear arsenal.
看来他终究不是吉米•卡特(Jimmy Carter)。美国总统巴拉克•奥巴马(Barack Obama)上周与俄罗斯总统德米特里•梅德韦杰夫(Dmitry Medvedev)在捷克首都布拉格签署了一项战略核裁军条约。本周他在华盛顿迎接世界各地的50位领导人，共商加强有关核安全的安排。同时他还公布了一项新的军事战略，大幅收窄了美国动用核武的想定范围。
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