To prove that he is really bonkers, and not to be underestimated.....Trump needs to frighten his enemies, including Iran, by showing he is capable of anything.....why not invade an easier country first?....the full monty, tanks, paratroopers, missiles, bunker busters....throw the lot in, a full show of force.....flatten the place.
Start with North Dakota....anyone crazy to invade his own country first is not to be messed with.