LAUSANNE, SWITZERLAND - APRIL 02: (L-R) Chinese Head of Delegation, French Foreign Minister Laurent Fabius, German Foreign Minister Frank-Walter Steinmeier, EU foreign policy chief Federica Mogherini, Iranian Foreign Minister Mohammad Javad Zarif, Russian Deputy Foreign Minister Vladimir Titov, British Foreign Secretary Philip Hammond, and US Secretary of State John Kerry speaks to the media following nuclear talks with Iran in Lausanne on April 02, 2015. (Photo by Thomas Trutschel/Photothek via Getty Images)
