Foreign Minister Sergey Lavrov called his German, French and Polish counterparts, who helped broker Friday's agreement between Ukrainian President Viktor Yanukovych and the opposition. Yanukovych agreed to hold early elections this fall and surrender much of his powers, but opposition supporters have kept pushing for his immediate dismissal.
The Russian Foreign Ministry said Lavrov urged his counterparts to use their influence with the Ukrainian opposition, which he said "not only has failed to fulfill any of its obligations, but keeps making new demands under the influence of armed extremists and rioters."
Their actions "pose a direct threat to Ukraine's sovereignty and constitutional order," he said.
Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.