to be clear...
it was an outstanding debt, and one of their conditions for releasing 4 american spies was to deliver the money we already owed?
IF it was a past agreed up debt that we were just dragging feet on - then I don't see a huge deal. If you want your spies back, go ahead and pay us back at the same time. Not unreasonable?
But if it was a newly invented debt, yes, that was a ransom payoff, definitely.