In order to make sure oil can get through the strait of Hormuz so gas prices don't rise and markets don't tank. Trump promises to have the US military escort ships through. Note he didn't say ships bound for the US, he said ALL ships. Most of them are NOT bound for the US, 40% of them are bound for... China!
So this genius is going to spend millions and millions of US dollars having our military escort oil ships through the strait so that gas prices won't go up. Who exactly does he expect to pay for that, China?