LAUSANNE, Switzerland - It was just one of hundreds of arguments between American and Iranian officials as they tried to hash out what may prove to be one of the hardest-to-negotiate arms control agreements in history. But it spoke volumes about how two countries that so deeply distrust each other managed to strike a tentative deal.
New York Times: An Iran nuclear deal built on coffee, all-nighters and compromise
TV journalists rush in the hotel on March 29, 2015 during Iran nuclear talks in Lausanne.
