Iranians celebrate nuclear agreement
An outline agreement on the future shape of Iran's nuclear programme has been reached after marathon talks with six major powers in Switzerland.
Under the deal, Iran will reduce its uranium enrichment capacity in exchange for phased sanctions relief.
US President Barack Obama said a "historic understanding" had been reached with Iran.
As news of the agreement spread celebrations spilled out onto the streets of Iran, as well as being greeted on social media.
Ben Bland reports.