I've never been very interested in the political and economic aspects of the war, and pre-war years. Still not interested in current politics and economics, so I really can't comment one way or the other about Roosevelt's intentions. But tired and old or not, the British were pretty glad to get those destroyers. As for getting repayment for war loans, I fail to see anything sinister about that. You borrow money, you have to expect to pay it back. That's my brand of economic theory.