With diplomacy failing to curb the ambitions and programmes of the trio of North Korea, Pakistan and Iran, it is going to be hard to dissuade the aspirants to the nuclear club.

• 既然外交手段无法阻止朝鲜、巴基斯坦、伊朗三国的核抱负，劝阻加入核俱乐部的努力就将变得困难。