Tensions spike in Hormuz as US warns ships, Iran fortifies nuclear sites

2026-02-10 - 10:25

Tensions in the Strait of Hormuz have escalated sharply, with the United States issuing an urgent security advisory for commercial vessels and satellite images indicating Iran is reinforcing its nuclear sites. The U.S. Maritime Administration warned ships to steer clear of Iranian territorial waters in the critical oil chokepoint, while imagery of tunnels being sealed at the Isfahan nuclear complex has fueled speculation of defensive preparations against a potential attack. US Emergency Advisory for the Strait of Hormuz In a new guidance, the U.S. administration advised that U.S.-flagged commercial ships should avoid Iran's territorial waters "as much as possible" while transiting the Strait. The advisory explicitly instructed crews not to forcibly resist if boarded by Iranian forces, emphasizing this does not imply consent. The warning highlights the persistent risk of military confrontation in a passage vital for global energy supplies, despite ongoing diplomatic talks in Oman. Satellite Imagery Suggests Iranian Defensive Moves Satellite images published by Israeli media appear to show tunnel entrances at Iran's Isfahan nuclear facility being sealed with earth. Analysts suggest this could be a defensive measure to protect enriched uranium stocks and limit damage in the event of an air strike. The activity underscores Tehran's apparent concern over a potential military operation by the United States or Israel, even as nuclear negotiations continue. Diplomatic Context and Vance's Comments The heightened alerts come alongside fragile indirect talks between Washington and Tehran. U.S. Vice President JD Vance, speaking in Armenia, indicated that demands in the negotiations would remain confidential and that any deal would require President Donald Trump's approval. He stated the U.S. administration believes a constructive agreement would benefit both sides, but the talks remain deadlocked over the scope of issues, with the U.S. insisting on including Iran's missile program and regional activities.