Iran's Islamic Revolutionary Guard Corps announced it will fully block the Strait of Hormuz, a critical maritime chokepoint between Iran and Oman [1, 2].

The move threatens global energy security and shipping lanes, as the strait is one of the world's most important transit points for oil and gas. Any prolonged disruption could trigger significant volatility in international markets.

According to YTN correspondent Hong Sang-hee, the IRGC framed the decision as a response to ships attempting to use illegal routes through the strait [1, 2]. The military wing said that vessels attempting to navigate unauthorized routes would be met with warning fire [1, 2].

Iran linked the blockade to the continued involvement of the U.S. in the region and the status of stalled nuclear-deal negotiations [1, 2]. The IRGC said the blockade will remain in place until U.S. involvement ends [1, 2].

This escalation follows a period of heightened tension regarding maritime security and diplomatic deadlock. The IRGC's statement suggests a shift toward more aggressive tactical measures to force a change in U.S. foreign policy, specifically regarding the nuclear deal and regional presence.

Ships in the area are now facing a direct threat of military engagement if they do not comply with the IRGC's routing mandates [1, 2]. The announcement has raised immediate concerns among international shipping companies and global energy regulators.

Iran said it will fully block the Strait of Hormuz.

The blockade of the Strait of Hormuz represents a severe escalation in the geopolitical standoff between Iran and the U.S. By weaponizing a primary global shipping artery, Iran is attempting to create immediate economic leverage to force a resolution on nuclear negotiations and the withdrawal of U.S. forces from the region.