U.S. President Donald Trump (R-FL) issued a warning to Oman on Monday over its cooperation with Iran on a shipping arrangement [1].

The dispute centers on the Strait of Hormuz, a critical global chokepoint for oil and trade. Any agreement that restricts movement or imposes new costs in the waterway could disrupt global energy markets and challenge U.S. naval dominance in the region.

The tension follows reports from Aug. 4 [2] that Oman and Iran were making progress on a deal to manage the transit of ships through the Strait. Some reports indicate the proposed plan includes the possibility of implementing tolls for vessels passing through the waterway [1].

Trump said the arrangement would threaten U.S. interests and regional stability. While some reports describe the warning as a general threat against Omani cooperation [1], other sources report that Trump said he would bomb Oman if the nation gets in the way of U.S. objectives regarding Iran [3].

This friction is not a recent development. Reports indicate Trump previously issued a warning during a Cabinet meeting on May 27 [3].

Oman has historically acted as a diplomatic mediator between Washington and Tehran. The current negotiations involve a joint statement to manage the waterway, but the specific terms of the shipping management remain a point of contention between the negotiating parties, and the U.S. government [1, 2].

Trump warned Oman over its cooperation with Iran on a shipping arrangement.

The Strait of Hormuz is the world's most important oil transit chokepoint. By threatening Oman—a traditional neutral mediator—the U.S. is signaling that it will not tolerate any bilateral agreement between Gulf states and Iran that could lead to the taxation or restriction of international shipping, which would grant Iran significant leverage over global energy prices.