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Ukrainian servicemen carry on January 20, 2015 at Independence Square in Kiev, the coffin of Sergii Nikonenko, 53, fighter of Azov volunteer battalion, who died during ATO (Anti-Terrrorist Operation) in the east of the country. Russia's defence ministry denied on January 20 as "absolute nonsense" the latest accusations by Kiev that Moscow had sent hundreds of troops over the border into Ukraine. AFP PHOTO/ ANATOLII STEPANOVANATOLII STEPANOV/AFP/Getty Images
Ukrainian servicemen carry on January 20, 2015 at Independence Square in Kiev, the coffin of Sergii Nikonenko, 53, fighter of Azov volunteer battalion, who died during ATO (Anti-Terrrorist Operation) in the east of the country. Russia's defence ministry denied on January 20 as "absolute nonsense" the latest accusations by Kiev that Moscow had sent hundreds of troops over the border into Ukraine. AFP PHOTO/ ANATOLII STEPANOVANATOLII STEPANOV/AFP/Getty Images

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OSCE: Security in Ukraine has deteriorated

The OSCE's Michael Bociurkiw speaks to CNN Today about the worst violence in Ukraine since September's ceasefire agreement was signed.

OSCE: Security in Ukraine has deteriorated

The OSCE's Michael Bociurkiw speaks to CNN Today about the worst violence in Ukraine since September's ceasefire agreement was signed.