Jean-Christophe Bott/Keystone
epa04665028 US Secretary of State John Kerry (2-L) rides a bike in full gear after a bilateral meeting with Iranian Foreign Minister Zarif (not pictured) for a new round of Nuclear Iran Talks, in Lausanne, Switzerland, 16 March 2015. Talks on a nuclear deal with Iran have entered a crucial phase, but there is still a long way to go, top EU diplomats said in Brussels ahead of meetings with Iranian Foreign Minister Mohammad Javad Zarif. Iran and six world powers are stepping up the diplomatic pace this week to reach a framework deal by the end of March. EPA/JEAN-CHRISTOPHE BOTT