Iran asserts control over Strait of Hormuz amid US naval blockade

Iran's Islamic Revolutionary Guard Corps has declared the Strait of Hormuz closed to ships cooperating with the US, enforcing control after the US imposed a naval blockade on Iranian ports since April 13. Iranian leaders, including Parliament Speaker Mohammad Bagher Ghalibaf and Supreme Leader Mojtaba Khamenei, warned on Persian Gulf Day that Tehran will manage the vital waterway to push out American presence, with reports of vessels turning around and one fired upon. The strait, carrying 25% of global seaborne oil, remains in a dual blockade standoff.

This crisis escalates risks to world energy supplies and oil prices, with the US rejecting Iran's ceasefire proposal tied to nuclear talks and Trump mulling extended measures costing billions. Iran vows sustained missile capabilities and potential Houthi action in Bab el-Mandeb, while both sides signal no quick resolution.

Iranian Perspective

The US blockade violates Iran's sovereignty and disrupts global trade, justifying Tehran's strict control over the Strait of Hormuz as a defensive response to aggression. Leaders assert the waterway's management ensures regional security free from American interference, with sufficient stockpiles to endure prolonged confrontation. They frame new rules as protecting Persian Gulf identity and energy flows for the world.

US Perspective

The naval blockade enforces necessary restrictions on Iranian ports amid the ongoing war, forcing dozens of ships to comply and preventing regime support. Trump administration views Iran's counter-closure as futile collapse signaling, rejecting proposals that delay nuclear negotiations. Officials maintain military readiness to sustain operations despite high costs and warn of further action if Tehran persists.

  • Oman shares the Strait of Hormuz's southern coast, maintaining neutrality in regional conflicts.
  • The 1979 Islamic Revolution birthed the IRGC to safeguard the new republic.
  • Bab el-Mandeb links the Red Sea to the Arabian Sea, a key trade artery.

US-Iran Ceasefire War

The United States launched military strikes against Iran on June 26, 2026, in response to a drone attack on a commercial cargo ship in the Strait of Hormuz, calling it a "foolish violation" of the 60-day ceasefire agreement signed just days earlier[2][4][14].

US-Iran Ceasefire War— full background & timeline
Iran asserts control over Strait of Hormuz amid US naval blockade | Implica