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Caine: US objective is to keep Iran from projecting power outside own borders

Breaking Defense published Caine: US objective is to keep Iran from projecting power outside own borders on March 2, 2026. Ashley Roque wrote it. It is her account of a Pentagon briefing two days after the United States and Israel began large-scale combat operations against Iran. Defense Secretary Pete Hegseth said there were not currently American boots on the ground inside Iran, and that this could change. An American family should care because the secretary left the door open. A denial for today is not a promise about next month.

Evidence rating: MODERATE. This is Breaking Defense's report of what two named officials said at a briefing. Hegseth's reported words say the situation could change, and that he would not list what the United States will or will not do.

What the article says​

The article says the briefing came more than 48 hours after the operation began. Chairman of the Joint Chiefs of Staff Gen. Dan Caine, the president's top military officer, told reporters the mission was to protect and defend the United States and, with regional partners, stop Iran from projecting power outside its own borders. He said forces should be ready for follow-on actions as appropriate. Hegseth said the goal was to stop Iran from building a nuclear bomb. He described Iranian missiles and drones as a shield for what he called nuclear blackmail.

The article names the operation Epic Fury. It says Caine told reporters that President Donald Trump approved it on Friday at 3:38 p.m. Eastern time, with the words that it was approved, there would be no aborts, and good luck. Strikes, the article says, began early Saturday. Caine would not say how many U.S. troops were in the region. He said a specific number would tip off the enemy.

The ground-troop line is one paragraph, and it is the reporter's wording.

"As for US troops inside Iran, Hegseth said there are not currently boots on the ground but said that could change."

Ashley Roque, Breaking Defense, March 2, 2026, reporting Defense Secretary Pete Hegseth at the Pentagon briefing that day.

The same paragraph quotes Hegseth: "We're not going to go into the exercise of what we will or will not do."

The article also says the Pentagon had announced the deaths of four U.S. service members in the operation, and that three U.S. F-15E Strike Eagles went down over Kuwait. Caine said that loss was not from hostile fire. Those lines are about Americans already in the fight in the region. They are not a report of troops inside Iran. A separate line says that, on the ground, U.S. forces fired a barrage of weapons and that more than 1,000 targets were hit. Read next to Hegseth's denial, that is a description of the strike, not a claim that soldiers had landed in Iran.

On length, the article says Trump had told the New York Times the operation could last four to five weeks. Hegseth called a fixed timetable a gotcha question and said it could move earlier or later. The article says Trump later the same day said the campaign was ahead of projections but could go far longer.

What other reporting and posts add​

Other outlets heard the same non-answer. The Washington Post's account of the same Monday briefing led with it: "Defense Secretary Pete Hegseth on Monday would not rule out the possibility of sending American ground troops to Iran or articulate the Trump administration's exit strategy." The Washington Post, 2 March 2026 (paywalled; lede as captured); the paper's own post on X. (capture: twitter/t56__v668.md)

Two days later, Hegseth framed it as a boast. On 4 March he told reporters, according to The New York Times: "We've taken control of Iran's airspace and waterways without boots on the ground." "We control their fate." Caine, the same day, cautioned that the operations were "far from over." The New York Times, Greg Jaffe, 4 March 2026. (capture: twitter/t52__v620.md)

The ground question followed him for weeks. By 20 March, the Wall Street Journal's Lara Seligman was reporting that "The Pentagon is sending three warships and thousands of additional Marines to the Middle East, even as President Trump insists he won't put American boots on the ground in Iran, according to U.S. officials." @laraseligman on X, 20 March 2026. (capture: twitter/t56__v668.md) In April, a critic's account claimed Caine had wanted to keep quiet that "hundreds of special forces took part in operations inside Iran" during the rescue of a downed airman, and that Trump "blurted it out." That is one poster's reading, with no document attached. @Disinfo_Tracker, 6 April 2026. (capture: twitter/t50__v590.md) For the rescue itself, see How a perilous US rescue mission in Iran nearly went off course.

What it shows​

At this briefing Hegseth said there were no boots on the ground inside Iran and that this could change; Gen. Caine spoke of follow-on actions. It did change. Within a month CBS reported detailed preparations for ground forces in Iran, and in April more than 90 Americans were on the ground inside Iran. Caine later told lawmakers "Air power has its limits." See No Boots on the Ground and Air War Is Not Enough.

Check it yourself​

Status: Donald Trump is alive. Pete Hegseth is alive. Dan Caine is alive.

Why this briefing matters to a newcomer: it was the first time, two days into the war, that the two top men at the Pentagon stood in front of cameras and were asked whether American soldiers would go into Iran. Pete Hegseth is the Secretary of Defense (the administration also calls the department the "Department of War"). Gen. Dan Caine is Chairman of the Joint Chiefs of Staff, the senior officer in the US military. Operation Epic Fury is the Pentagon's name for the American part of the air war that the United States and Israel began on 28 February 2026.

Research captures: twitter/t56__v668.md, twitter/t52__v620.md, twitter/t50__v590.md

Last Updated: 2026-09-26

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