Coral Energy, a Dubai-based oil trader and storage company, has hired Mercury Public Affairs for Washington representation.
The company is among the United Arab Emirates and Saudi Arabian energy companies to purchase heavily discounted Russian crude oil, according to the Wall Street Journal.
The Persian Gulf countries use the cheap Russian oil for internal use and refining, while exporting their own barrels at higher market rates.
Since Russia invaded Ukraine, a move that triggered sanctions from the US and European Union, Coral Energy has handled dozens of shipments of Russian oil to Turkey, Tunisia and some European nations.
Mercury has Toby Moffett, former Connecticut Democratic Congressman; and Bryan Lanza, communications director for the Trump transition team, handling Coral Energy.
Omnicom owns Mercury.