Iran's Revolutionary Guards seized two container ships near the Strait of Hormuz using swarms of small, fast boats equipped with heavy machine guns, rocket launchers, and anti-ship missiles. This occurred during a U.S. blockade outside the strait, with over 100 boats destroyed since the conflict began on February 28. Tensions involve threats from both sides and a 'layered system of threats' including missiles, drones, mines, and electronic interference.