President Donald Trump said Monday that the ceasefire between the U.S. and Iran is on "life support" after he rejected Tehran's latest peace proposal [1, 2, 3].

The breakdown of these negotiations threatens to end a fragile truce and could lead to renewed hostilities in a volatile region. The current ceasefire has lasted for one month [4], having begun in mid-April 2026 [5].

Speaking during a public briefing in Washington, D.C., Trump said the latest offer from Iran was unacceptable [2, 6]. He said that the month-long ceasefire is weak [4].

U.S. officials cited different primary reasons for the rejection of the proposal. Some reports indicate the offer lacked satisfactory nuclear concessions [2], while other accounts state it was unacceptable because it failed to address sovereignty over the Strait of Hormuz [6].

Trump did not provide a specific timeline for when the ceasefire might officially expire, but he said that the current state of diplomacy is precarious [1, 2]. The U.S. administration has maintained that any lasting agreement must include stricter limits on Iran's nuclear capabilities.

"The ceasefire is on life support," Trump said [1].

"Iran's latest offer is unacceptable," Trump said [2].

The ceasefire is on life support.

The rejection of this proposal suggests a significant gap between U.S. demands for nuclear disarmament and Iranian interests regarding regional sovereignty and the Strait of Hormuz. Because the ceasefire is already viewed as 'weak' by the White House, the lack of a viable counter-offer increases the risk of a return to active conflict.