U.S. imposes more Russian and Ukrainian sanctions

WASHINGTON (Reuters) - The United States imposed further Russia and Ukraine-related sanctions on Thursday, adding associates of a billionaire Russian gas trader, Crimean port operators and former Ukrainian officials to its list of those it is penalizing in response to Russia's actions in Ukraine.

The U.S. Treasury Department's Office of Foreign Assets Control (OFAC) imposed measures against eight entities and people it said were providing support to Gennady Timchenko, a prominent gas trader previously sanctioned.