U.S. President Barack Obama and European leaders on March 3 warned Russia that they were ready to step up sanctions if there were further violations of a ceasefire agreement in Ukraine, officials said.
Russia's War Against Ukraine
Reuters: Western leaders hint at more Russian sanctions over Ukraine
US President Barack Obama an German Chancellor Angela Merkel leave following a joint press conference in East Room on the White House in Washington, DC, Feb. 9, 2015.
