I fear that some of what my hon. Friend says is correct, but it is also true that we lessen our ability to make that case, on our own behalf and in the global interest, if we step back. I want to see Britain leading that conversation and taking its place at the table. If we can do that, we will be able to construct a global system today, just as we did 70 years ago. It worked then, and we need a system that works now.
The more we send a signal that says Britain is stepping back, the less we have the right to make the case, and making that case is surely in the interest of all our constituents. My hon. Friend is right that it will take a long time, but he surely has to acknowledge that we must have that long-term view, because this global migration crisis will be with us for decades. If we step back, we will have less right to influence that conversation.