"I'm a businessperson. I did really well. But I have common sense. And I said, well, I'll tell you. I haven't given lots of thought to NATO. But two things.Number one, the 28 countries of NATO, many of them aren't paying their fair share. Number two - and that bothers me, because we should be asking - we're defending them, and they should at least be paying us what they're supposed to be paying by treaty and contract."