U.S. President Barack Obama has criticized Russia's "increasingly aggressive" stance on Ukraine, where fighting between pro-government forces and separatists has killed more than 6,100 people since April 2014.
Radio Free Europe/Radio Liberty: Obama denounces Russia’s ‘increasingly aggressive’ stance on Ukraine
US President Barack Obama speaks to reporters following a meeting with NATO Secretary General Jens Stoltenberg in the Oval Office at the White House in Washington, DC, on May 26, 2015.
