‘Let the oil flow!’: Can US and Iran actually strike lasting deal?

If Donald Trump calls it a peace deal, does that make it so? ‘”Let the oil flow,” trumpeted the US president after agreeing on the day of his 80th birthday to a memorandum of understanding with Iran. Trump was quick to schedule a signing ceremony for this coming Friday in Switzerland, across from where he’s flown in for a G7 summit on the French side of Lake Geneva.