The only way to make sense of Trump's rhetoric is to remember he's the king of bull. To him, the truth is meaningless. He wants to sound tough, so he says he's sending the navy. That doesn't mean he'll bother to start sending orders to make it so, in Picard's words.

One thing that seems to be bugging Trump horribly about being President is that your words are always recorded. You can't just shrug and say no, you never said that. It's cramping his style bigly.