Iran nuclear: Kerry and Hague join Geneva talks
23 November 2013 Last updated at 23:22 GMT
US Secretary of State John Kerry is in Geneva, joining UK Foreign Secretary William Hague and other foreign ministers to work for a deal on Iran's nuclear programme.
The negotiations, now in their fourth day, hinge on Iran agreeing to stop enriching uranium in return for a loosening of sanctions.
The BBC's Middle East editor Jeremy Bowen reports from Geneva.