WASHINGTON — Defense Secretary Pete Hegseth refused to set a timeline for ending U.S. military operations against Iran and left open the possibility of ground troops, delivering the first extended public remarks by an administration official since strikes began Saturday.
Speaking at the Pentagon, Hegseth described the joint U.S.-Israeli operation as the "most lethal and precise air power campaign in history" and said U.S. goals are the destruction of Iran's navy, its ballistic missile production capacity and its ability to produce a nuclear weapon. He said four U.S. service members had been killed after a ballistic missile penetrated allied air defenses.
On the question of duration, Hegseth declined to commit. "President Trump has all the latitude in the world to talk about how long it may or may not take," he said when asked for the U.S. exit strategy. "Four weeks, two weeks, six weeks. It could move up, it could move back."
President Trump went further in a separate interview with the New York Post, explicitly declining to rule out sending ground troops into Iran. "I don't have the yips with respect to boots on the ground — like every president says, 'There will be no boots on the ground.' I don't say it," Trump said. "I say 'probably don't need them' or 'if they were necessary.'" Trump's remarks came shortly after Hegseth said the U.S. had no troops on Iranian soil but would not speculate on what Washington "will or will not do."
Hegseth was direct about what the operation is not. He said the U.S. has no intention of pursuing a democratic transition in Iran, and repeated that this is "not a democracy-building exercise" and "not Iraq" and "not endless." Gen. Dan Caine, chair of the Joint Chiefs of Staff, said the U.S. has established local air superiority over Iran by suppressing Iranian air defenses.
The strikes, which began Saturday, killed Iran's supreme leader, Ayatollah Ali Khamenei. The Pentagon remarks came more than 48 hours after operations began, marking the first substantive public explanation of U.S. objectives.
Secretary of State Marco Rubio offered a significant revision to the stated rationale for U.S. involvement. Earlier briefings from U.S. officials had indicated that Washington entered the conflict because Iran was planning a preemptive ballistic missile strike against U.S. interests in the region, and that the threat was described as "intolerable."
Rubio said Monday the actual trigger was different. The U.S. acted because Israel was preparing an imminent strike to assassinate Khamenei, and Washington anticipated Iran would immediately retaliate against American targets once attacked. "There was absolutely an imminent threat and it was that we knew that if Iran was attacked and we believe that they would be attacked, that they would immediately come after us and we were not going to sit there and absorb a blow," Rubio said.
The distinction matters for the legal and diplomatic justification the administration has advanced. A preemptive strike against a state actor requires a different threshold of evidence under international law and congressional war powers frameworks than a defensive posture assumed in anticipation of allied action. Rubio's account places the United States as responding to a projected Iranian counter-strike rather than neutralizing a direct Iranian first strike.
Washington has simultaneously moved on the economic front, rolling out what officials described as a rare package of sanctions aimed at isolating Iran financially. Hegseth and other officials indicated the military campaign and the economic pressure are running in parallel, not as alternatives.
Hegseth drew a line between destruction of specific Iranian military capabilities and open-ended occupation. The stated targets — Iran's naval forces, its ballistic missile production infrastructure and its nuclear program — are defined military assets rather than governmental institutions, which aligns with his repeated insistence that Washington is not seeking regime change through nation-building.
