An activist from the Self-Defense group guards the Ukrainian Presidential building in Kiev
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Activists guard Ukrainian presidential buildings

22 February 2014 Last updated at 11:50 GMT

Activists from so-called Self Defence units have stationed guards outside presidential buildings, and say they are protecting them "for the nation".

They claim to have full control of the situation outside, and say they are in contact with state guards inside the building.

Ostap Krivdyk from Self Defence told the BBC's Abdujalil Abdurasulov who they are and why they are guarding presidential buildings,