Ukraine urged pro-Russian separatists to stop shelling government troops and start withdrawing their heavy weapons, while President Barack Obama said Russia must choose peace to have U.S. sanctions lifted. Separatists shelled government troop-held Donetsk airport and a checkpoint in the area, wounding eight servicemen, military spokesman Andriy Lysenko told reporters in Kiev today. He said Russia provided no information to Ukraine about the content of a fourth aid convoy that is on its way to the region. Russia denies U.S. and European Union allegations that it’s stoking the unrest in eastern Ukraine. NATO said yesterday Russia has embarked on a “significant” withdrawal of its forces from Ukraine, adding to signs that the truce is holding between the government in Kiev and separatist groups. The conflict, which erupted after Russia annexed Crimea in March, has killed more than 3,200 people, the United Nations estimates. Obama, in a speech today to […]