WASHINGTON >> President Donald Trump asked senior advisers in an Oval Office meeting Thursday whether he had options to take action against Iran’s main nuclear site in the coming weeks. The meeting occurred a day after international inspectors reported a significant increase in the country’s stockpile of nuclear material, four current and former U.S. officials said Monday.

A range of senior advisers dissuaded the president from moving ahead with a military strike. The advisers — including Vice President Mike Pence; Secretary of State Mike Pompeo; Christopher C. Miller, the acting defense secretary; and Gen. Mark A. Milley, chair of the Joint Chiefs of Staff — warned that a strike against Iran’s facilities could easily escalate into a broader conflict in the last weeks of Trump’s presidency.

Any strike — whether by missile or cyber — would almost certainly be focused on Natanz, where the International Atomic Energy Agency reported Wednesday that Iran’s uranium stockpile was now 12 times larger than permitted under the nuclear accord that Trump abandoned in 2018. The agency also noted that Iran had not allowed it access to another suspected site where there was evidence of past nuclear activity.

Trump asked his top national security aides what options were available and how to respond, officials said.

After Pompeo and Milley described the potential risks of military escalation, officials left the meeting believing a missile attack inside Iran was off the table, according to administration officials with knowledge of the meeting.

Trump might still be looking at ways to strike Iranian assets and allies, including militias in Iraq, officials said. A smaller group of national security aides had met late Wednesday to discuss Iran, the day before the meeting with the president.

White House officials did not respond to requests for comment.

The episode underscored how Trump still faces an array of global threats in his final weeks in office. A strike on Iran may not play well to his base, which is largely opposed to a deeper American conflict in the Middle East, but it could poison relations with Tehran so that it would be much harder for President-elect Joe Biden to revive the 2015 Iran nuclear accord, as he has promised to do.

Since Trump dismissed Defense Secretary Mark T. Esper and other top Pentagon aides last week, Defense Department and other national security officials have privately expressed worries that the president might initiate operations, whether overt or secret, against Iran or other adversaries at the end of his term.

The events of the past few days are not the first time that Iran policy has emerged in the final days of a departing administration. During the last days of the Bush administration in 2008, Israeli officials, concerned that the incoming Obama administration would seek to block it from striking Iran’s nuclear facilities, sought bunker-busting bombs, bombers and intelligence assistance from the United States for an Israeli-led strike.

Vice President Dick Cheney later wrote in his memoir that he supported the idea. President George W. Bush did not, but the result was a far closer collaboration with Israel on a cyberstrike against the Natanz facility, which took out about 1,000 of Iran’s nuclear centrifuges.

Ever since, the Pentagon has revised its strike plans multiple times. It now has traditional military as well as cyber options, and some that combine the two. Some involve direct action by Israel.

The report from the International Atomic Energy Agency concluded that Iran now had a stockpile of more than 2,442 kilograms, or more than 5,385 pounds, of low-enriched uranium. That is enough to produce about two nuclear weapons, according to an analysis of the report by the Institute for Science and International Security. But it would require several months of additional processing to enrich the uranium to bomb-grade material, meaning that Iran would not be close to a bomb until late spring at the earliest — well after Trump would have left office.

While the amount is concerning, it is far below the amount of fuel Iran possessed before President Barack Obama reached a nuclear accord with Tehran in July 2015. Late that year, under the terms of the accord, Iran shipped about 97% of its fuel stockpile to Russia — about 25,000 pounds — leaving it with less than it would need to build a single weapon.

Trump has argued since the 2016 campaign that Iran was hiding some of its actions and cheating on its commitments; the inspectors’ report last week gave him the first partial evidence to support that view. The report criticized Iran for not answering a series of questions about a warehouse in Tehran where inspectors found uranium particles, leading to suspicion that it had once been some kind of nuclear-processing facility. The report said Iran’s answers were “not technically credible.”

The International Atomic Energy Agency has previously complained that inspectors have been barred from fully reviewing some suspected sites.

It is not just the U.S. military that is looking at options. Pompeo, officials said, is closely watching events unfolding on the ground in Iraq for any hint of aggression from Iran or its proxy militias against U.S. diplomats or troops stationed there.

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