European Union foreign policy chief Federica Mogherini said on Sunday it was not impossible to get a deal between world powers and Iran over its nuclear program but said tough days lay ahead as a self-imposed June 30 deadline nears. France’s foreign minister said on Saturday an accord remained elusive due to disagreements over fundamental issues, while the U.S. and Iranian top diplomats said hard work was still needed for what could be their final negotiations to bridge significant differences. “If a few days more are needed we will take them,” Mogherini told reporters on arrival in Vienna. “It is going to be tough… but not impossible. It is a matter of political will,” she said before meeting the U.S., British, German and French foreign ministers. The talks also include Russia and China. The deadline for a deal under which Iran would cut back its nuclear program in […]