British armed forces intercepted a sanctioned Russian shadow fleet oil tanker in the English Channel on Sunday, for the first time leading an operation to disrupt the oil revenue that helps fund Russia’s war in Ukraine. The vessel Smyrtos, sailing under the Cameroon flag, was boarded by Royal Marine Commandos and National Crime Agency (NCA) officials in the early hours on Sunday, with support from Chinook helicopters and other aircraft, a frigate and a minehunter. “This successful operation...