Oil prices rose nearly three percent [1] on Monday after President Donald Trump dismissed Iran's reply to a U.S. peace proposal.

The sudden price hike reflects growing investor anxiety that diplomatic efforts to stabilize the Middle East are collapsing. This volatility threatens global energy costs and increases the risk of prolonged conflict in critical shipping lanes.

Trump said the Iranian response to the U.S. peace proposal was a "stupid proposal" [2], effectively rejecting the terms offered by Tehran. The dismissal comes amid heightening tensions that have left the Strait of Hormuz effectively closed, a primary chokepoint for global oil exports.

Market analysts suggest that the geopolitical instability is now baked into the price of crude. JP Morgan analysts said oil is expected to remain in the low $100s per barrel [3] even if the Strait of Hormuz reopens next month [3].

The surge in prices occurred as traders reacted to the collapse of the peace push. The dismissal of the proposal has left the U.S. and Iran at odds, with few remaining diplomatic channels to prevent further escalation in the region.

Industry observers said that the market is now pricing in a higher risk of supply disruptions. The volatility follows a period of intense speculation regarding whether the two nations could reach a breakthrough agreement to ease sanctions, and reopen trade routes.

Oil prices rose nearly three percent after President Donald Trump dismissed Iran's reply to a U.S. peace proposal.

The rejection of the peace proposal signals a return to a high-pressure 'maximum pressure' diplomatic stance. By dismissing the Iranian counter-offer, the U.S. administration has increased the likelihood of a prolonged energy crisis, as the market now expects oil to maintain a high price floor regardless of short-term shipping recoveries in the Strait of Hormuz.