ROUGH CUT (NO REPORTER NARRATION).
STORY: U.S. Representative to the UN, Samantha Power, says the United States is calling on Russia to pull back from Ukraine's Crimea as she calls for an international mediation mission.
Armed men took control of two airports in the Crimea region on Friday in what the new Ukrainian leadership described as an invasion by Moscow's forces, and ousted President Viktor Yanukovich surfaced in Russia after a week on the run.
Yanukovich said Russia should use all means at its disposal to stop the chaos in Ukraine as tension rose on the Black Sea peninsula of Crimea, the only region with an ethnic Russian majority and the last major bastion of resistance to the overthrow of the Moscow-backed leader.
Acting Ukraine President Oleksander Turchinov accused Russia of open aggression and said Moscow was following a scenario similar to the one before it went to war with fellow former Soviet republic Georgia in 2008.
