Iran nuclear talks miss deadline; Russia says 'key aspects' agreed

Reuters: Six world powers and Iran negotiated past a March 31 deadline into the wee hours of Wednesday, struggling to conclude an outline accord on Tehran's nuclear program in the face of a U.S. threat to abandon the talks.

With Iran asserting its "nuclear rights", the talks in the Swiss city of Lausanne entered a seventh day, bogged down this time on the issues of nuclear research, the lifting of U.N. sanctions and their restoration if Iran breached the agreement.

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