On a warm spring night in Athens, shortly before midnight, a senior executive at a Greek shipping company noticed an unusual email had landed in his personal inbox.

Houthis say attack was carried out with drone boat as part of their 'military operations against American and British ships,' and continuation of their 'naval blockade on the Israeli enemy' - Anadolu

Yemen’s Iran-backed Houthi rebels released footage on October 3 showing an uncrewed surface vessel, or drone boat, striking a ship they described as a “British” oil tanker, the Cordelia Moon, in the Red Sea two days earlier on October 1.