The U.S. is slapping even more sanctions on Russia.
On Tuesday, the Treasury Department sanctioned two Russian shipping companies it suspects are transporting petroleum products to North Korea — which violates some U.N. Security Council trade bans.
The Associated Press reports the Treasury is also going after two other Russian companies and two Russians for attempting to get around U.S. sanctions set in June.
Those were imposed in response to Russian hacking and other malicious activities conducted by the country's military and spy organizations.
Tuesday's set of sanctions freezes the companies' and Russians' assets held in the U.S.