As separatists conceded that militants from Russia's province of Chechnya had joined the rebellion, a Ukrainian government official cautioned Wednesday that its borders had become a "front line" in the crisis.
Chechnya's Moscow-backed strongman brushed away allegations he had dispatched paramilitary forces under his command to Ukraine, saying he was powerless to stop fellow Chechens from joining the fight.
00:41 Italy resists EU push for Russia sanctions over Aleppo bombings
16:10 The Putin's 'Puppet' Accusations Speak Volumes About the Sad State of U.S.-Russia Relations
00:18 Russia and Syria pause in bombing of rebel-held sections of Aleppo
08:23 Ukraine announces 'Normandy Format' meeting in Berlin on October 19