LAUSANNE, Switzerland — United States, Iran and European Union leaders working on a deal to limit Iran’s nuclear program took a several-hour pause to sleep early Thursday after a marathon session that lasted through the night.
Two days beyond the longstanding deadline to reach a deal, the all-night talks were focused on whether the U.S. and EU would agree to ease banking, oil and financial sanctions, apart from United Nations sanctions, officials said. The discussions ended around 6:05 a.m. local time (midnight ET).
Secretary of State John Kerry and Iranian Foreign Minister Javad Zarif later resumed negotiations after a three-and-a-half hour break.
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Speaking to reporters early Thursday, Zarif said that there had been significant progress but no deal yet.








