Ukraine: Russia's 'act of aggression'

Heavily-armed troops displaying no identifying insignia and who were mingling with local pro-Russian militants, stand guard outside a local government building on Sunday, March 2, in Simferopol, Ukraine. The new government of Ukraine has appealed to the United Nations Security Council for help against growing Russian intervention in Crimea, where thousands of Russian troops reportedly arrived in recent days at Russian military bases there and also occupy key government and other installations. World leaders are scrambling to persuade Russian President Vladimir Putin to refrain from further escalation in Ukraine.
Heavily-armed troops displaying no identifying insignia and who were mingling with local pro-Russian militants, stand guard outside a local government building on Sunday, March 2, in Simferopol, Ukraine. The new government of Ukraine has appealed to the United Nations Security Council for help against growing Russian intervention in Crimea, where thousands of Russian troops reportedly arrived in recent days at Russian military bases there and also occupy key government and other installations. World leaders are scrambling to persuade Russian President Vladimir Putin to refrain from further escalation in Ukraine.

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    Ukraine: Russia's 'act of aggression'

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Ukranian Ambssador to the U.N. Yuriy Sergeyev talks to Candy Crowley about the crisis in Ukraine.