On this one I think this IR policies are flopping.
The public and ask and refusal is a loss. And the refusal was almost guaranteed because his personal insults and style of commenting on foreign powers has made helping him politically toxic in most western democracies. His own poor conduct has made it just about impossible for leaders in other countries to help him. In Canada, looking like you are onside with Trump would be close to political suicide and I bet it is similar in the larger european economies as well. His style and undisciplined language has hurt him.
It seems like he is finally learning one of Churchill's maxims "There is only one thing worse than fighting with allies, and that is fighting without them".
You think a guy who claims so much deal making experience might realize that if you want to ask other parties for assistance that you just might want to have built up some good will with them first. Germany and others may be paying high gas prices, but high gas prices are not going to help Trump in November.