President Donald Trump rejected Iran's response to a U.S. peace proposal on Monday, calling the reply "totally unacceptable."

The rejection signals a significant breakdown in diplomatic efforts to stabilize the Strait of Hormuz. Failure to reach an agreement threatens global energy markets and increases the risk of direct military escalation in the region.

Trump said the Iranian response failed to meet specific U.S. demands regarding a cease-fire and nuclear disarmament. The president said that the terms provided by Iran were insufficient to end the ongoing conflict.

"Totally unacceptable," Trump said.

While the White House dismisses the proposal, international efforts to maintain maritime security continue. Dozens [1] of defense ministers are scheduled to meet in the UK and France to discuss restoring trade flows through the Strait of Hormuz.

The U.S. administration has maintained that any viable peace agreement must include verifiable steps toward disarmament. The current impasse leaves the strategic waterway, a critical chokepoint for global oil shipments, in a state of high tension.

Trump said the response was not what the U.S. expected after presenting its terms. The administration has not yet indicated if it will offer a revised proposal or pivot toward other forms of pressure to achieve its objectives.

"Totally unacceptable."

The rejection of the peace proposal suggests that the gap between U.S. demands for nuclear disarmament and Iran's willingness to concede remains wide. By labeling the response 'totally unacceptable,' the U.S. is signaling that it will not compromise on its core security requirements, potentially shifting the focus from diplomatic negotiation to military deterrence and international coalition-building to protect trade routes.