DUBAI, United Arab Emirates (AP) — President Donald Trump extended his deadline for Iran to reopen the crucial Strait of Hormuz to international shipping, saying Monday that the U.S. would hold off on threatened strikes against Iranian power plants for five days.

In his announcement on Truth Social, Trump also held out the possibility of a resolution to the war — though Iranian officials denied there were negotiations. Trump's turnaround appeared to offer something of a reprieve after the U.S. and Iran traded threats with potentially catastrophic repercussions for civilians across the region.

Trump later told reporters that Iran wants “to make a deal,” and claimed U.S. envoys have been holding talks with a “respected” Iranian leader. He said his Middle East special envoy Steve Witkoff and Trump’s son-in-law Jared Kushner conducted talks Sunday into the evening, and that the negotiations would continue.

Trump did not name any official or officials representing Tehran. He said the U.S. has not talked to Supreme Leader Ayatollah Mojtaba Khamenei. Trump said if a deal is reached with Iran, the U.S. will move to take Iran’s enriched uranium critical to its disputed nuclear program.

Shortly after Trump's social media announcement — hours before the deadline was set to expire — Iranian state television declared that the American leader had backed down “following Iran’s firm warning.”

The war, now in its fourth week, has already seen several dramatic turning points — the killing of Iran’s supreme leader, the bombing of a key Iranian gas field, and strikes targeting oil and gas facilities and other civilian infrastructure in Gulf Arab nations. The conflict has killed more than 2,000 people, shaken the global economy, sent oil prices surging, and endangered some of the world’s busiest air corridors.

The latest threatened attacks could have cut electricity to wide swaths of people in Iran and around the Gulf and knocked out desalination plants that provide many desert nations with drinking water. There are also increasing concerns about the consequences of any strikes on nuclear facilities.

Trump issued a deadline and then extended it

Trump said over the weekend that the U.S. would “obliterate” Iran’s power plants unless the country releases its stranglehold on the Strait of Hormuz within 48 hours — a deadline that would have expired late Monday Washington time.

But on Monday morning, Trump wrote on his Truth Social site that the U.S. and Iran have had “very good and productive conversations” that could yield “a complete and total resolution” in the war.

Trump added that the suspension of his threat to attack power plants was “subject to the success of the ongoing meetings and discussions.”

Trump did not elaborate on the negotiations that had taken place, and the state-owned IRAN newspaper reported that Iran’s Foreign Ministry denied that there have been any.

“Remarks by the U.S. president are part of efforts to reduce energy prices and buy time to implement his military plans” the newspaper said.

Earlier, Iranian Foreign Minister Abbas Araghchi said he spoke by phone with his Turkish counterpart, Hakan Fidan. Turkey has been an intermediary before in negotiations between Tehran and Washington.

President Abdel-Fattah el-Sissi also said Monday that Egypt has delivered “clear messages” to Iran focusing on de-escalating the conflict, according to his office.

Iran threatened retaliation

Iran’s paramilitary Revolutionary Guard promised retaliation if Trump made good on his threat, saying Iran would hit power plants in all areas that supply electricity to American bases, “as well as the economic, industrial and energy infrastructures in which Americans have shares.”

Iranian parliament speaker Mohammad Bagher Qalibaf said Iran would consider vital infrastructure across the region to be legitimate targets, including energy and desalination facilities critical for drinking water in Gulf nations.

Iran’s semiofficial Fars news agency, which is close to the Revolutionary Guard, published a list of such facilities, including the United Arab Emirates’ nuclear power plant. Over the weekend, Iran launched missiles targeting Dimona in Israel, near a facility key to its long-suspected atomic weapons program. The Israeli facility wasn’t damaged.

In the wake of Trump's turnaround, Fars and the Tasnim news agencies portrayed the American president as backing down.

“Since the start of the war, messages have been sent to Tehran by some mediators, but Iran’s clear response has been that it will continue its defense until the required level of deterrence is achieved,” Tasnim’s report said. “With this kind of psychological warfare, neither the Strait of Hormuz will return to pre-war conditions nor will calm return to energy markets.”

With the U.S. deploying more amphibious assault ships and additional Marines to the Middle East, Iran also warned against any ground attack.

“Any attempt by the enemy to target Iran’s coasts or islands will, naturally and in accordance with established military practice, lead to the mining of all access routes ... in the Persian Gulf and along the coasts,” Iran’s Defense Council warned.

Trump has said he has no plans to send ground forces into Iran but also has said he retains all options. Israel has suggested its ground forces could take part in the war.

Oil prices have soared but dropped after Trump announcement

Iran's chokehold on the Strait of Hormuz has wreaked havoc on energy markets, pushed up prices of food and other goods well beyond the Middle East and sent shock waves throughout the global economy.

“No country will be immune to the effects of this crisis if it continues to go in this direction,” said Fatih Birol, the head of the Paris-based International Energy Agency.

Oil prices were stubbornly high in early trading Monday, but plunged after Trump's announcement.

Jorge Moreira da Silva, a senior United Nations official, said the world has already seen a ripple effect, including “exponential price hikes in oil, fuel and gas” that have had a far-reaching impact on millions, primarily in Asian and African developing countries.

“There is no military solution,” he said.

Israel strikes Tehran and Lebanon

Israel launched new attacks Monday on the Iranian capital, saying it had “begun a wide-scale wave of strikes” on infrastructure targets in Tehran without immediately elaborating. Explosions were heard in multiple locations in the afternoon. It wasn’t immediately clear what had been hit.

The United Arab Emirates reported its air defense were attempting to intercept new incoming Iranian fire Monday afternoon.

Israel has also targeted the Iran-linked Hezbollah militant group in Lebanon, while the group has fired hundreds of rockets into Israel.

In recent days, Israel has hit many apartment buildings in Beirut and bombed bridges over the Litani River in the Lebanon’s south.

Lebanese President Joseph Aoun called the targeting of bridges “a prelude to a ground invasion,” while Egypt denounced the strikes as the “collective punishment” of civilians for the actions of Hezbollah.

Authorities say Israeli strikes have killed more than 1,000 people in Lebanon and displaced more than 1 million.

Iran’s death toll has surpassed 1,500, its Health Ministry has said. In Israel, 15 people have been killed by Iranian strikes. At least 13 U.S. military members have been killed, along with more than a dozen civilians in the occupied West Bank and Gulf Arab states.

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Rising reported from Bangkok and Magdy from Cairo. AP writers Charlotte Graham-McLay in Wellington, New Zealand, Sally Abou AlJoud and Bassem Mroue in Beirut, and Tong-hyung Kim in Seoul, South Korea, contributed to this report.