Iran nuclear deal 'reached' at Geneva talks
Iran and six world powers meeting in Geneva have reached a deal on Tehran's nuclear programme, foreign ministers say.
No details have been released about the agreement, which has been reached after five days of negotiations.
Negotiators from the UK, US, Russia, China, France and Germany want Iran to stop enriching uranium in return for a loosening of sanctions.
The BBC's Iran correspondent James Reynolds has been following the talks in Geneva.