Iran warned the United States on Sunday that it was making a “big mistake” after President Donald Trump rejected a peace-deal proposal [1].

The escalation threatens the stability of the Strait of Hormuz, a critical global shipping lane. If Tehran carries out its threats against foreign vessels, it could disrupt international trade and increase the risk of direct military conflict between the two nations.

The dispute began after President Trump dismissed Iran's latest response to a U.S. peace plan. Trump said the proposal was "totally unacceptable" [2].

In response to the rejection, officials in Tehran said the U.S. is operating under a miscalculation. Iran said it would not hold back from retaliating against U.S. warships or other foreign vessels operating in the Strait of Hormuz [1].

Reports indicate that Iran's proposed deal focused on three key areas: the status of the Strait of Hormuz, an end to war, and the resumption of nuclear talks [3]. However, the U.S. administration said the offer was insufficient or unacceptable [1].

This exchange follows a pattern of high-tension diplomacy where both sides have used threats to gain leverage. While Iran frames the U.S. rejection as aggression, the U.S. administration said any agreement must meet specific security and nuclear requirements [2].

The warning from Tehran marks a shift toward more explicit threats of maritime interference. This strategy aims to pressure the U.S. by targeting the economic interests of third-party nations that utilize the narrow waterway [3].

"Totally unacceptable"

The rejection of this proposal suggests a breakdown in diplomatic channels and a return to a 'maximum pressure' cycle. By threatening the Strait of Hormuz, Iran is leveraging its geographic advantage to internationalize the conflict, forcing global powers to consider the economic cost of U.S. policy toward Tehran.