Talks on Iran’s nuclear program are due to resume in Switzerland on March 26.
Six world powers and Iran are facing a March 31 deadline to reach a framework deal to limit Tehran’s nuclear activities in exchange for relief from economic sanctions.
Tehran denies it is secretly developing a nuclear weapon, as Western and other nations, especially Israel, suspect.
Iranian Foreign Minister Mohammad Javad Zarif and U.S. Secretary of State John Kerry are due to meet in Lausanne on March 26.
Ministers from some other members of the six-power group negotiating with Iran — which also includes Britain, France, Russia, China, and Germany — are expected to arrive later.
France’s UN ambassador, Francois Delattre, told the Security Council on March 24 that areas of disagreement include the research and development of advanced centrifuges and the lifting of U.S., European Union, and UN sanctions imposed on Iran over the years.
Centrifuges are a crucial tool for the enrichment of uranium, which can be used as fuel for a nuclear reactor or in a nuclear weapons, depending on the level of enrichment.
A senior State Department official traveling with Kerry said Washington would not rush to complete an agreement just because there was a deadline, words meant to address concerns — raised by Israel, U.S. lawmakers, and others — about the possibility of a deal that would not go far enough to curb Iran’s activities.
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