US Marines boarded an Iranian-flagged tanker amid rising tensions. 20 ships transiting the Strait of Hormuz by May 31 at 48% YES.

Iran controls parts of the Hormuz Strait, disrupting shipping. Average daily transits by May 31 at 86.5% YES for 0-10 ships.

Iran warns of military action in the Gulf of Oman. 20 ships transit the Strait of Hormuz by May 31 at 43% YES.