DUBAI, United Arab Emirates — President Donald Trump announced that Israel and Iran had agreed to a “complete and total ceasefire” soon after Iran launched a limited missile attack Monday on a U.S. military base in Qatar, retaliating for the American bombing of its nuclear sites.

Trump posted on Truth Social that the 24-hour phased-in ceasefire will begin at approximately midnight Tuesday eastern time, giving the two countries six hours to have “wound down and completed their in progress, final missions.” He said it would bring an “Official END” to the war.

There was no immediate comment from Israel or Iran on Trump’s statement.

Iran’s attack Monday indicated it was prepared to step back from escalating tensions in the volatile region. The U.S. was warned by Iran in advance, and there were no casualties, said President Donald Trump, who dismissed the attack as a “very weak response.”

Qatar condemned the attack on Al Udeid Air Base as “a flagrant violation” of its sovereignty, airspace and international law. Qatar said it intercepted all but one missile, though it was not clear if that missile caused any damage.

Iran said the volley matched the number of bombs dropped by the United States on Iranian nuclear sites over the weekend. Iran also said it targeted the base because it was outside of populated areas.

Those comments, made immediately after the attack, suggested Iran wanted to de-escalate with the United States, something Trump himself said after the strikes early Sunday on Iran.

Qatar Maj. Gen. Shayeq Al Hajri said 19 missiles were fired at the base that is home to the Combined Air Operations Center, which provides command and control of air power across the region, as well as the 379th Air Expeditionary Wing, the largest such wing in the world. Trump said 14 missiles were fired, 13 were knocked down and one was “set free” because it posed no threat.

Trump said Iran might be able to “proceed to Peace and Harmony” and said he would encourage Israel to do the same.

However, Israel’s war on Iran continued, with the Israeli military expanding its campaign Monday to target sites symbolic for the country’s theocracy.

Iran announced the attack on state television as martial music played. A caption on screen called it “a mighty and successful response” to “America’s aggression.”

Just before the explosions, Iranian President Masoud Pezeshkian wrote on the social platform X: “We neither initiated the war nor seeking it. But we will not leave invasion to the great Iran without answer.”

Earlier reports that a missile was launched at a base housing American forces in Iraq were a false alarm, a senior U.S. military official said. The official, who spoke on condition of anonymity because he was not authorized to comment publicly, said debris from a malfunctioning Iranian missile targeting Israel had triggered an alert of an impending attack on the Ain al-Assad base.

On the 11th day of the conflict, Israel and Iran traded airstrikes that have become a reality for civilians in both countries since Israel started the war to target Tehran’s rapidly advancing nuclear program.

Iran struck Israel with a barrage of missiles and drones while Israel said it attacked “regime targets and government repression bodies in the heart of Tehran.”

But Israeli officials insisted they did not seek the overthrow of Iran’s government, their archenemy since the country’s 1979 Islamic Revolution.

The latest strikes unfolded only hours after Trump himself mentioned the possibility of regime change a day after inserting America into the war with its stealth-bomber strike on three Iranian nuclear sites.

“If the current Iranian Regime is unable to MAKE IRAN GREAT AGAIN, why wouldn’t there be a Regime change???” he asked on his Truth Social website.

White House press secretary Karoline Leavitt later described Trump as “simply raising a question.”

The U.S. strikes over the weekend prompted fears of a wider regional conflict. Iran said the U.S. had crossed “a very big red line” with its risky gambit to strike with missiles and 30,000-pound bunker-buster bombs.

Israel aims to wind down the war in the coming days, but that will depend on the Iranians, an Israeli official said on condition of anonymity to discuss high-level internal deliberations.