From NPR.

Iran is vowing to retaliate after the U.S. seized an Iranian-flagged vessel over the weekend.

In a grainy, edited video released by Central Command, U.S. Marines are shown rappelling onto an Iranian-flagged vessel after U.S. forces struck its engine. CENTCOM says the commercial ship failed to comply with repeated U.S. warnings over a six-hour period Sunday as it sailed in the Arabian Sea toward Iran. President Trump says U.S. Marines now have custody of the vessel. Iran’s Revolutionary Guard warned it will take the necessary action against the U.S. military for the seizure of that ship, without elaborating.

The U.S. is blocking the transit of Iranian cargo ships in international waters around Iran, as Iran continues blocking most ships from passing through the Strait of Hormuz.

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