I do not agree. My hon. Friend knows we have a difference of opinion, and I hope that he will move towards my position. I still hope that might be so, and I say that because one has to look at the mutual incentives and disincentives for both parties to stay in the arrangement. I made this point in December and, for the reasons I advanced in December and in my November opinion, the incentives or disincentives for the European Union are as profound, if not greater, to get us out of the backstop than to keep us in it. That is what I firmly believe. He may disagree, but that is what I believe.
That is why I have taken the political judgment that this withdrawal agreement needs to be supported but, in saying that, these improvements do make a difference. In the last line of my advice, I say there can be no lawful exit unless there is a fundamental change of circumstance. It is extremely important to remember that there is always a right to terminate a treaty unilaterally if circumstances fundamentally change. There is no question but that we have a right to exit if those circumstances apply.