KIEV, UKRAINE – FEBRUARY 19: Anti-government protesters guard the perimeter of Independence Square, known as Maidan, on February 19, 2014 in Kiev, Ukraine. After several weeks of calm, violence has again flared between police and anti-government protesters, who are calling for the ouster of President Viktor Yanukovych over corruption and an abandoned trade agreement with the European Union. (Photo by Brendan Hoffman/Getty Images)
