President Donald Trump said Monday that Iran faces the prospect of renewed military action if it does not agree to terms restricting its nuclear program, as a fragile ceasefire between the two sides approaches expiration.

In a phone interview, Trump indicated that failure to reach an agreement could quickly lead to intensified conflict, warning that hostilities would resume if the current truce lapses without progress. He reiterated that the administration’s central objective remains preventing Iran from acquiring nuclear weapons, describing that goal as non-negotiable.

The remarks come as U.S. officials prepare for another round of negotiations expected to take place in Islamabad. The American delegation is set to include Vice President JD Vance, envoy Steve Witkoff, and senior adviser Jared Kushner, reflecting a continued push for a diplomatic resolution despite rising tensions.

Trump expressed uncertainty about Iran’s participation in the talks, suggesting the outcome would not alter the administration’s broader posture. He has maintained a dual-track strategy that combines negotiations with explicit warnings of military consequences if Tehran refuses to curb its nuclear ambitions.

Tensions have increased in recent days following reported Iranian actions in the Strait of Hormuz, a critical corridor for global energy shipments. U.S. officials have accused Tehran of violating the ceasefire by targeting vessels, adding pressure ahead of the negotiation deadline.

In recent public statements, Trump has described the proposed agreement as fair while warning that rejecting it could result in significant military strikes. He has also pointed to potential economic benefits of a resolution, including lower energy prices if tensions in the region ease.

The administration has defended the involvement of Kushner in the negotiations, with Trump characterizing him as an effective dealmaker focused on achieving a long-term solution to the nuclear issue.

With the ceasefire set to expire and both diplomatic and military options on the table, the coming days are expected to play a critical role in determining whether the situation moves toward de-escalation or renewed conflict.