The UK on Sunday supported Israel’s assertion that the fatal attack on an oil tanker on Thursday off the coast of Oman was carried out by Iran. The attack on Mercer Street, an oil tanker from London-based and Israeli-owned company Zodiac Maritime, killed a British national and a Romanian national on board, making it the first known fatal attack after years of assaults on commercial shipping in the region linked to tensions with the Islamic regime over its tattered nuclear deal. British Foreign Secretary Dominic Raab said on Sunday that the UK believes the attack was “deliberate, targeted, and a clear violation of international law by Iran.” “The UK condemns the unlawful and callous attack committed on a merchant vessel off the coast of Oman,” the statement reads. The foreign secretary said his thoughts are with the friends and families of the victims. “UK assessments have concluded that it is highly likely that …