US President Barack Obama and Iranian President Rouhani
Media playback is unsupported on your device
Video

Iran nuclear deal partly down to 'secret talks' with US

Months of secret high-level negotiations between the US and Iran appear to have helped pave the way for the deal reached over Iran's controversial nuclear programme.

Ahead of the six-month provisional deal reached at the Geneva talks, there were numerous face-to-face meetings between Iranian and American ministers in Oman and elsewhere.

Mike Wooldridge reports.

Go to next video: 'Iran deal will make region safer'