President Donald Trump warned Monday that the U.S. would restart military operations against Iran if the country fails to honor a nuclear agreement [1].
The statement signals a potential return to escalation in the Middle East if the recently signed memorandum of understanding is not upheld. This ultimatum places the burden of stability on Tehran's compliance with the nuclear program terms.
Speaking to reporters in the Oval Office on June 22, 2026 [1], Trump said the perception is that Iran is not complying with the memorandum [2]. He said that the U.S. must enforce the agreement to ensure its effectiveness.
"If Iran doesn't live up to their agreement, or if they're not behaving, I will do what I have to do," Trump said [3].
The President did not specify the exact nature of the military operations he might restart, though he reiterated his resolve to ensure the deal is followed [4]. The warning follows a period of diplomatic effort to secure the current memorandum of understanding regarding Iran's nuclear capabilities.
Trump said that the U.S. position remains firm on enforcement. He repeated the phrase, "I will do what I have to do," during the White House briefing [5].
“"If Iran doesn't live up to their agreement, or if they're not behaving, I will do what I have to do."”
This ultimatum indicates that the current diplomatic window provided by the memorandum of understanding is conditional. By explicitly linking military action to the 'behavior' of the Iranian government, the administration is utilizing a strategy of maximum pressure to ensure strict adherence to nuclear constraints, leaving little room for diplomatic ambiguity.
