Russian Deputy Prime Minister Dmitry Rogozin Taunts Obama Via Twitter After US Imposes Sanctions

A close collaborator of Russian President Vladimir Putin taunted President Barack Obama Monday via Twitter, after the U.S. administration imposed sanctions on Moscow for occupying Crimea and intervening in Ukraine's political affairs. Western nations do not recognize the referendum because the polls were "administered under threats of violence and intimidation from a Russian military intervention that violates international law," according to a White House statement.