epa04690138 (L-R) Chinese representative, French Foreign Minister Laurent Fabius, German Minister of Foreign Affairs Frank-Walter Steinmeier, High Representative of the European Union for Foreign Affairs and Security Policy Federica Mogherini,Iranian Foreign Minister Javad Zarif, the Russian representative, British Foreign Secretary Philip Hammond and US Secretary of State John Kerry pose for a group picture at a press event after the end of a new round of Nuclear Iran Talks in the Learning Center at the Swiss federal Institute of Technology (EPFL), in Lausanne, Switzerland, 02 April 2015. The agreement on key elements of a nuclear agreement over Iran’s conroversial nuclear programme is a major step toward reaching a final deal, Iran and six world powers say. The final deal, which is to be concluded by the end of June, will limit Iran’s uranium enrichment programme and its nuclear research and development programme, they said. EPA/VALENTIN FLAURAUD