伊朗和世界强国仍对达成核协议保持乐观，但互相指责

Diplomats from Iran and a group of world powers seeking to limit its uranium enrichment say they remain committed and optimistic about reaching a deal, despite trading blame for failing to agree at their latest meeting.

Iranian Foreign Minister Mohammad Javad Zarif said late Monday the two sides made "considerable progress" during days of talks that ended last weekend in Geneva.  But he blamed the lack of a deal on divisions among the so-called P5+1 group that includes the United States, Britain, France, China, Russia and Germany.

U.S. Secretary of State John Kerry and British Foreign Secretary William Hague each said their group was united in their proposal.  Kerry said it was Iran that could not accept the deal, and said he hoped the two sides would reach an agreement within months.

The negotiations resume next week.