The deadline for a deal on Iran’s nuclear programme has been put back until July 9, according to diplomats at the international talks in Vienna.<br /><br /> The final date had been set for this Tuesday, the last day of June.<br /><br /> Amid suspicions that Tehran is trying to build nuclear weapons, a senior US official said real and tough issues still had to be resolved to get a comprehensive agreement.<br /><br /> Secretary of State John Kerry – still on crutches due to a broken leg – has met his Iranian counterpart for talks.<br /><br /> Foreign minister Mohammad Javad Zarif flew in on Tuesday morning, telling reporters a final deal was possible.<br /><br /> Iranian media say the country has a serious desire to accelerate negotiations and achieve an agreement.<br /><br /> The main differences are over the monitoring of Iran’s nuclear programme – which Tehran insists is for energy – and the pace and timing of sanctions relief.<br /><br /> The West wants UN inspectors to have access to Iranian military sites – strongly rejected by Iran’s Supreme Leader