The Biden administration has imposed some of its toughest sanctions yet on Russia, in a move designed to hit Moscow's energy revenue that is fuelling its war in Ukraine. The measures target more than 200 entities and individuals ranging from traders and officials to insurance companies, as well as hundreds of oil tankers.

The Biden administration is cracking down on the Russian “shadow fleet” and taking steps to curb oil and gas production.

The White House, now unconcerned about the effect on gas prices and inflation, blacklisted two of Russia’s biggest oil producers and nearly 200 tanker ships.