奥巴马宣布进一步制裁参与克里米亚事态的俄罗斯人

U.S. President Barack Obama has announced new sanctions against Russia for its annexation of Crimea.

Speaking in the White House Rose Garden, the president said he is imposing sanctions on more individuals involved in Russia's occupation of the Black Sea peninsula.  Earlier the United States placed sanctions limiting travel and economic activity on 21 people involved in the Kremlin's actions against Ukraine.

The president also said he is considering expanding sanctions further, ti apply to sectors of the Russian economy in addition to specific individuals.

Mr. Obama said he is deeply concerned about the situation in Crimea and is working with European allies to formulate a response to the Russian actions.

Russian forces effectively took control of Crimea two weeks ago in the wake of the ouster of Ukraine's pro-Russian president, Viktor Yanukovych, after months of protests and sporadic violence.