The U.S. Navy announced that on 18 January it “interdicted a stateless fishing vessel… transiting from Iran in waters outside of any state’s territorial sea along a route historically used to traffic weapons to the Huthis in Yemen”, adding: “U.S. forces discovered 40 tons of urea fertilizer, a chemical compound with agricultural applications that is also known to be used as an explosive precursor”. According to the statement, “the vessel, cargo and five Yemeni crewmembers” were handed over Yemeni authorities.