US and UK Navies Respond to Distress Call Amid Iranian Harassment of Ship.

The US and UK navies responded to a distress call from a merchant ship in the Strait of Hormuz after it was "harassed" by three Iranian Revolutionary Guard fast-attack vessels. The incident comes amid a series of maritime incidents involving Iran following the US's withdrawal from Tehran's nuclear deal in 2018. The Strait of Hormuz sees 20% of the world's oil pass through it.