A deal on limiting Iran’s nuclear programme in return for the lifting of sanctions has been reached at talks in Vienna, diplomats say, the BBC reports.
Under the agreement, access for nuclear inspectors monitoring Iran’s programme would reportedly not be automatic.
Six world powers including the US, Russia and the UK have been negotiating with Iran for several years.
The so-called P5+1 – the US, UK, France, China and Russia plus Germany – want Iran to scale back its sensitive nuclear activities to ensure that it cannot build a nuclear weapon.
Iran, which wants crippling international sanctions lifted, has always insisted that its nuclear work is peaceful.