The preliminary U.S. proposal came as a confidential U.N. report described an Iranian initiative that had multiplied Tehran’s stockpile of near-bomb-grade uranium.

Iran previously carried out secret nuclear activities with material not declared to the U.N. nuclear watchdog at three locations that have long been under investigation, the watchdog said in a wide-ranging, confidential report to member states seen by Reuters.

As US President Donald Trump pushes for a deal, Israeli Prime Minister Benjamin Netanyahu warns time is running out and readies military options, NYT report says. 'Only a deal that dismantles all infrastructure is acceptable.