epa04690734 Iranian foreign minister Mohamad Javad Zarif greets his supporters as he arrives from Lausanne, Switzerland to Mehr-Abad airport in Tehran, Iran, 03 April 2015. Iran and six world powers have agreed on the key points of a deal over Iran’s controversial nuclear programme. Iranians are so happy by hearing that world powers are ready to lift the sanctions against the country. EPA/BORNA QASEMI