There will be no nuclear talks with Iran on Sunday, a senior U.S. administration official says, adding Washington still hopes Tehran will resume negotiations soon. “We remain committed to talks and hope the Iranians will come to the table soon,

Israel called it a preemptive strike designed to prevent Iran from developing nuclear weapons. Iran has denied plans to develop such weapons and retaliated by launching counterstrikes on Israel.

As Israel and Iran intensify their strikes deep into each others’ territories, a former US nuclear negotiator warned on Monday that hopes for renewed diplomacy with Tehran are fading rapidly, citing fundamental deadlocks and escalating military action.

Tehran is undecided on whether it will attend the next round of negotiations with the U.S., an Iranian Foreign Ministry spokesman said in state media. U.S. and Iranian officials were expected to meet for a sixth round of talks in Oman Sunday.

Israel and Iran have begun a new round of attacks, as the conflict between the two heavily armed rivals enters its fourth day.

Trump on Monday urged the immediate evacuation of Tehran post, amid rising tensions between Iran and Israel. His comments came after explosions were reported in the Iranian capital, sparking panic among residents.