The U.N. Security Council is holding an emergency meeting at Russia's request amid growing violence in eastern Ukraine.
Russian Ambassador Vitaly Churkin says he is alarmed by Ukraine's announcement that it would deploy armed forces to quash an increasingly bold pro-Russian insurgency.
But Britain's ambassador, Mark Lyall Grant, says there are increasing signs of Russian involvement in orchestrating the violence.
"We want to use this Security Council meeting to expose that but also warn Russia against using events in eastern Ukraine as a pretext for further military escalation in the region,'' Lyall Grant said.
Ukrainian special forces exchanged gunfire with a pro-Russia militia in an eastern city Sunday morning, with at least one security officer killed and five others wounded.
Photo: John Minchillo/AP