U.S. President Barack Obama and German Chancellor Angela Merkel have spoken about the "significant increase in violence" in eastern Ukraine.
Russia's War Against Ukraine
Radio Free Europe/Radio Liberty: Obama, Merkel discuss rising Ukraine violence
Ukrainian servicemen ride an APC at the frontline in the village of Orlovka village, near the eastern Ukrainian city of Donetsk, on January 23, 2015. Pro-Russian rebels on Jan. 23.
