U.S. President Donald Trump said Saturday he could authorize new military action against Iran if tensions escalate, even as both sides continue exchanging proposals aimed at ending the conflict.

“If they misbehave, if they do something bad… it’s certainly a possibility,” Trump told reporters when asked about the prospect of fresh strikes.

The warning comes as negotiations remain at an impasse. Iran recently submitted a revised proposal outlining a phased approach to ending the war, including reopening the Strait of Hormuz, lifting the U.S. naval blockade, and securing a broader ceasefire that would also cover Lebanon.

According to sources familiar with the plan, Tehran suggested a one-month timeline to finalize an initial agreement on these issues, followed by additional talks focused on its nuclear program.

Trump has signaled dissatisfaction with the proposal but said he would review it further. At the same time, military options remain under consideration. The president was briefed this week by Brad Cooper on updated strike plans, and the commander has since traveled to the region, meeting U.S. personnel aboard the USS Tripoli.

The dual track of diplomacy and military planning underscores the fragile state of negotiations, with both sides weighing next steps as efforts to reach a comprehensive deal continue.