Last month, Iran and the P5+1 group - Russia, China, Britain, France, the US and Germany - failed to meet the November 24 deadline to sign a permanent nuclear deal. They agreed to extend their discussions until June 2015, so that they could resolve their differences and clinch a permanent accord.
US Secretary of State John Kerry said in a Sunday address to the Brookings Institution in Washington that Iran and the P5+1 group could reach a final deal on Tehran’s nuclear issue months “sooner” than the new deadline.
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