Russia's War Against UkraineCNN: US ambassador to UN visits Ukraine, slams Russian ‘aggression’By CNN. Published June 11, 2015 at 8:23 pm US Ambassador to the United Nations Samantha Power gestures as she speaks during her address to Ukrainians in Kiev on June 11. Photo by AFPA senior U.S. diplomat, on a visit on June 11 to Ukraine, has slammed what she called Russian "aggression" in the country.Read the story here.