You kidding? What Trump doesn't know is foreign policy. I can feel it when he speaks, although he at least is pro-American. When Trump talks business, economics in general, trade, and immigration, he rules, and it's palpable. All other candidates come off as pretenders, with the exception of Marco Rubio who is simply more skilled at theater.
I suggest that with our enemies, he follow Ronald Reagan's foreign policy: "We win. They lose."