27 June 2015, 09:05 GMT
VIENNA (Sputnik), Daria Chernyshova – Earlier, Ukrainian authorities spoke in favor of including the United States in the Normandy Four, comprising Russia, Ukraine, France and Germany. In February, the foursome hammered out a ceasefire deal between Kiev and eastern Ukraine's independence supporters, who the West claims are supported by Moscow.
"I don't think it would be a good idea," the source said. "The US has a role, others have a role. But I think that Normandy format is good because France and Germany talk to both [Russia and Ukraine]…I don't think Russia and Ukraine will find a better configuration to talk."