Iranian negotiators at international
With a July 20 deadline looming, Secretary of State John F. Kerry and his No. 2 and No. 3 diplomats remained in the Austrian capital to try to resolve the issue.
They said they were making progress in some areas but remained at a standoff over enrichment, a subject on which neither side can give much ground because of domestic political pressures. Iran wants to expand its enrichment program to an industrial scale, whereas the six world powers it is negotiating with insist it reduce production to a "fraction."
One Iranian proposal, described for the first time Monday in the Wall Street Journal, would allow the country to continue to operate its 9,400 centrifuges for the duration of the deal. The plan, similar to one proposed by Iran's foreign minister in 2005, is considered unworkable in its current form by the world powers, which, in addition to the U.S., are Britain, France, Germany, Russia and China. But some analysts said it could prove valuable if combined with other ideas to limit Iran's ability to produce a nuclear weapon.
Iran's supreme leader said last week that he wanted a centrifuge capacity that's almost 20 times the current operation.
Iran, which is seeking to have the world powers end economic sanctions on the nation, insists its nuclear development plans are for civilian purposes only. The U.S. and other Western powers believe the country is seeking to develop nuclear weapons.