It is impossible to know whether this benign pattern will hold. But recent developments in the Middle East suggest that there are grounds for concern in other volatile countries, namely Pakistan, North Korea, and Iran.
我们不可能知道这样的良性模式能否继续下去。但中东近期的事态发展表明人们有理由担心巴基斯坦、北朝鲜和伊朗等其他动荡国家的核设施。