Iran's joint military command warned oil tankers to use approved routes in the Strait of Hormuz or face a forceful response on Thursday.

The escalation threatens one of the world's most critical oil chokepoints, risking global energy stability as military tensions between Tehran and Washington intensify.

Iran's joint military command said all oil tankers moving through the Strait of Hormuz must use approved routes or face a "forceful response" [2]. This declaration marks the strategic waterway as a "red line" for the Iranian military [1]. A senior regime figure in Iran said that the crucial Strait of Hormuz cannot be the same [4].

These warnings coincide with ongoing military operations by the United States. U.S. forces have carried out strikes for six straight nights [1]. The nightly strikes are part of a broader regional conflict, with Iranian officials saying they would attack "all infrastructure in the region" if President Trump follows through on threats to attack Iranian civilian infrastructure [3].

The instability has directly impacted global energy markets. Brent crude prices rebounded on Tuesday [4] and have remained above $85 per barrel [1].

Iran aims to deter tankers from navigating the strait without permission and to increase pressure on the U.S. government amid the current hostilities [2, 3]. The Strait of Hormuz serves as the primary artery for oil exports from the Persian Gulf, making any disruption a significant risk to the global economy.

“"All oil tankers moving through the Strait of Hormuz must use its approved routes or face a 'forceful response.'"”

The designation of the Strait of Hormuz as a 'red line' indicates that Iran is leveraging its geographic control over a vital energy transit point to create strategic leverage. By coupling this threat with warnings against civilian infrastructure strikes, Tehran is attempting to deter U.S. military escalation by threatening a global economic shock through the disruption of oil supplies.