Since the collapse of the Soviet Union three decades ago, the United States has often played a unique role as the world's nuclear policeman. During that period, no other nation has acquired a deliverable nuclear weapon. But as Trump's failed North Korea talks suggest, America is no longer fulfilling its traditional function effectively, leaving a dangerous vacuum with no clear player to fill the void.


원문출처 : https://www.cnn.com/2019/03/20/opinions/world-policeman-andelman-intl/index.html