Of course the hon. Gentleman is right, but the first and most acute threat, underlined by the brutal invasion that Putin has undertaken in Ukraine, is where our first duty lies. It is where our neighbourhood lies, and it is our primary obligation to our closest allies. That forces us to confront the fact that we can no longer take peace and security in Europe for granted, as we have done since the end of the cold war. We must now face a future of persistent confrontation with Russia.
Ministers have said to me and to the House in recent weeks that it is perhaps too early to learn lessons from Ukraine, but one lesson I take is that, despite the gung-ho, go-it-alone promotion of global Britain, almost no nation can do anything alone and Britain is a bigger force for good in the world when we act with allies.