A fragile cease-fire between the United States and Iran is threatened with collapse after President Donald Trump rejected a revised Iranian proposal.

The stability of the agreement is critical because the dispute centers on the Strait of Hormuz, a vital maritime corridor for global energy supplies. Any escalation in this region could disrupt international oil markets and increase the risk of direct military conflict.

President Trump said that both nations are continually testing each other's limits. The tension follows an announced cease-fire with a duration of two weeks [1], which was subject to Iran agreeing to the immediate and safe opening of the Strait of Hormuz [1].

Trump said he would rain "Hell" on Iran and its infrastructure if the country does not quickly reopen the waterway on U.S. terms [2]. This threat comes as reports indicate the U.S. administration has rejected the latest terms offered by Tehran, putting the temporary truce at risk of failure [3].

Rep. Adam Smith (D-WA) said the situation is volatile, noting the precarious nature of the current diplomatic standoff. While some reports indicate an initial agreement was reached [4], other accounts suggest the president may not extend the temporary pause if negotiations for a long-term deal fail [5].

The U.S. position remains focused on the immediate restoration of safe passage through the strait. The Iranian government has previously promised safe passage, but the revised terms of that agreement have not met the demands of the Trump administration [1].

Trump said he would rain "Hell" on Iran and its infrastructure if it does not quickly reopen the Strait of Hormuz.

The collapse of this two-week window would signal a failure of short-term diplomacy and likely lead to a surge in military presence in the Persian Gulf. Because the Strait of Hormuz is a global chokepoint for oil, the transition from a fragile cease-fire to active hostilities would likely trigger immediate volatility in global energy prices.