Supreme Allied Commander Gen. Philip Breedlove attends a media conference at NATO headquarters in Brussels on Jan. 22. Breedlove told NPR on Thursday that "the conditions in eastern Ukraine have to change." Geert Vanden Wijngaert/AP hide caption

itoggle caption Geert Vanden Wijngaert/AP

President Obama sits with (from left) French President Francois Hollande; Ukrainian President Petro Poroshenko; British Prime Minister David Cameron; German Chancellor Angela Merkel; and Italian Prime Minister Matteo Renzi as they meet about Ukraine Thursday at the NATO summit at Celtic Manor in Newport, Wales. Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP