'IAEA will monitor Iran's nuclear activities intensively'

The nuclear deal with Iran means a lot more work for the UN's nuclear watchdog, the IAEA.

It will have a crucial role to play in checking whether Iran's nuclear work remains peaceful.

The head of the IAEA, Yukiya Amano, who has just returned from Tehran, told the BBC's Bethany Bell that a new phase had begun for his inspectors in Iran.