Israeli officials also called for those in Tehran to evacuate earlier Monday ahead of its continued military campaign against Iran.

European foreign ministers told their Iranian counterpart in a call on Monday to return to nuclear negotiations with the U.S. and refrain from escalating conflict with Israel, to which Iran's foreign minister said Tehran's priority was to confront Israel for now,

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

Experts suggest the U.S. has a strategic opportunity to leverage Iran's weakened position for a nuclear deal after Israel's targeted strikes on Iranian nuclear and military sites.

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,

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.

Iran has suspended nuclear talks with the US after Israel’s surprise attack on its nuclear facilities, while President Trump continues to urge Iran to enter into a deal to prevent further

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.

U.S. refueling aircraft and warships have been dispatched to safeguard U.S. interests as the deadly conflict shows no sign of abating.