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Ukraine warns Russia against 'act of aggression' in Crimea

Ukraine's acting president has warned Russia that troop movements outside its naval base in Crimea would be seen as an "act of aggression". Armed men seized regional government headquarters and parliament and the Russian flag is flying from buildings

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Close-up footage of battle between police & protesters

Footage appearing to show the battle close-up between police and protesters on the streets of the Ukrainian capital Kiev has been posted on YouTube.

In the video, which was posted today but cannot be independently verified by ITV News, officers are seen hitting protesters with batons before demonstrators fight back in the violent clashes.

A warning that this video shows people being kicked and hit with batons.

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