Day in photos - December 18

Pro-European Union activists shout slogans during a rally in the Independence Square in Kiev, Ukraine, Tuesday, Dec. 17, 2013. Weeks of angry pro-European Union protests as well as Western pressure have forced Yanukoyvch to make some concessions to the opposition. Russian President Vladimir Putin upped the stakes Tuesday in the battle over Ukraine's future, saying Moscow will buy $15 billion worth of Ukrainian government bonds and sharply cut the price of natural gas heading to its economically struggling neighbor. (AP Photo/Alexander Zemlianichenko)