Sounds like something straight out of a spy movie: An unmarked U.S. cargo plane -- stacked with wooden pallets filled with $400 million of Swiss francs, euros and other currencies -- flies to Iran
, the same day four American prisoners held in the country are released. A ransom? Oh no, says the White House, that's was just the first payment in the Iran nuke deal. Had to do it that way because at the time Iran was cut off from the global financial system. A bunch of malarkey, say critics, including GOP nominee Trump. The payment, in their view, violates U.S. policy and encourages Iran to nab more Americans.