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One of the armed masked men who call themselves members of Ukraine's disbanded elite Berkut riot police force aims his Klashnikov rifle at a checkpoint under a Russian national (L) and Russian naval (R) flags on a highway that connect Black Sea Crimea peninsula to mainland Ukraine near the city of Armyansk, on February 28, 2014. The spiralling tensions in a nation torn between the West and Russia took today a severe new turn when Ukraine's interim president Oleksandr Turchynov accused Russian soldiers and local pro-Kremlin militia of staging raids on Crimea's main airport and another base on the southwest of the peninsula where pro-Moscow sentiments run high.
One of the armed masked men who call themselves members of Ukraine's disbanded elite Berkut riot police force aims his Klashnikov rifle at a checkpoint under a Russian national (L) and Russian naval (R) flags on a highway that connect Black Sea Crimea peninsula to mainland Ukraine near the city of Armyansk, on February 28, 2014. The spiralling tensions in a nation torn between the West and Russia took today a severe new turn when Ukraine's interim president Oleksandr Turchynov accused Russian soldiers and local pro-Kremlin militia of staging raids on Crimea's main airport and another base on the southwest of the peninsula where pro-Moscow sentiments run high.

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Russia accused of 'armed invasion'

Tensions mount as forces swarm Ukraine airport. CNN's Ian Lee reports from Kiev.

Russia accused of 'armed invasion'

Tensions mount as forces swarm Ukraine airport. CNN's Ian Lee reports from Kiev.