It's depressing.
"They’ve got a lot of sand over there. So, there’s a lot of sand that they can play with. Let them fight their own wars" was the line that he used to talk about the potential deaths of innocent civilians.
But wait... there's this tweet from 2014 too...
Saudi Arabia should fight their own wars, which they won't, or pay us an absolute fortune to protect them and their great wealth-$ trillion!
— Donald J. Trump (@realDonaldTrump) August 31, 2014
What he's doing is completely obvious and indefensible.