File-This Feb. 13, 2019, file photo shows  Iranian Foreign Minister Mohammad Javad Zarif speaking at a news conference in Tehran, Iran. Zarif suddenly resigned late Monday, Feb. 25, 2019, without warning, offering an “apology” to the nation as the nuclear deal he negotiated with world powers stands on the verge of collapse after the U.S. withdrew from the accord.  (AP Photo/Ebrahim Noroozi, File)
Iranian Foreign Minister Mohammad Javad Zarif speaking at a news conference in Tehran, Iran. AP

Iran's Mohammad Javid Zarif warns there is 'no prohibition' on the enrichment of uranium