Iran says it will begin limiting international monitoring of its nuclear sites Kim Hjelmgaard and Deirdre Shesgreen, USA TODAY U.S. ready for talks with Iran on nuclear deal Replay Video UP NEXT Foreign Minister Mohammad Javad Zarif's remarks came as Tehran confirmed it would begin limiting additional international monitoring of its nuclear sites Tuesday, a move that for Iran represents another lean away from the accord exited by the U.S. in 2018. Zarif's comments also follow an offer from President Joe Biden's administration to meet with Iran and other world powers involved in negotiating the agreement. Biden's national security adviser Jake Sullivan said Tehran had "not yet responded" to that diplomatic opening.