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A masked gunman stands guard near tanks in Slaviansk, Ukraine, on Wednesday, April 16.
A masked gunman stands guard near tanks in Slaviansk, Ukraine, on Wednesday, April 16.

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    Military thwarted by pro-Russian groups

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Military thwarted by pro-Russian groups

The Ukrainian military's attempts to quell pro-Russian activists has failed. CNN's Phil Black reports.

Military thwarted by pro-Russian groups

The Ukrainian military's attempts to quell pro-Russian activists has failed. CNN's Phil Black reports.