I cannot think of one ally—never mind the United States—that thinks that the world would be safer or that we would be safer if we left the European Union. Let me be clear: our central defence rests on our membership of NATO, but there are things that the European Union can add to that—not least, for example, the recent action taken against Russia after its annexation of Crimea and its interference in eastern Ukraine. It was the European Union that was able to apply economic sanctions—something NATO cannot do.