Defence Minister Igor Tenyukh told the Ukrainian government's first cabinet session that Russia's armed forces had sent in 30 armoured personnel carriers and 6,000 additional troops into Crimea in a bid to help local pro- Kremlin militia gain broader independence from the new pro-EU leaders in Kiev.
Tenyukh accused Russia of starting to send in these reinforcements on Friday "without warning or Ukraine's permission."
The defence chief spoke as dozens of pro-Russian armed men in full combat gear patrolled outside the seat of power in Crimea's capital Simferopol, a day after similar gunmen seized control over airports and government buildings in the territory.
Crimea has come to the fore of a Cold War-style confrontation between the West and Russia over Ukraine, a faceoff that has also exposed the ancient cultural rifts between the pro-European west and Russian-speaking south and east of this country of 46 million.
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Pro-Russian gunmen seized Crimea's government and parliament buildings in Simferopol on Thursday before allowing lawmakers to appoint a new prime minister and call for a regional referendum -- moved forward today to March 30 -- that would proclaim even greater independence for the already-autonomous region.
Crimea's newly-chosen prime minister followed that up today by fervently calling on Russian President Vladimir Putin to help restore "peace and calm" amid his standoff with Kiev's Western-backed authorities.
The UNSC discussed the crisis behind closed doors while US President Barack Obama -- although not referring to Russia directly -- warned that "there will be costs for any military intervention in Ukraine.