The only thing wrong with it is that Trump seems to have a habit of making a strong statement that is way over the top and then walking it back. It shows that he speaks without thinking through the consequences of what he is going to say. I don’t think this would be a good trait in a President - it also leaves me wondering what position he really holds. It also makes him look somewhat unpredictable to hostile foreign leaders: except that they note that he is always advancing *somewhere*, which is an excellent trait to have in a President.