I'm pretty sure @mammasitta realises that, and I do to. But to close the borders, a physical wall doesn't have to be in place. A physical wall gives fuel for more anger, that will not solve the situation. We hear different things here in Europe about Trump. Trump about to resign his position, before the house will 'let him go' him. Wrt North Korea, I think Trump did a very bad job, and those who believe he won, they are not objective, but that is just my humble opinion :)