The United States may impose sanctions against Ukraine if security forces intensify a crackdown on anti-government demonstrators in the capitals .\r
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The European Union weighed imposing targeted sanctions on Ukraine as the countrys Health Ministry reported that 25 people had been killed and hundreds .\r
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Russia has said it took action in Crimea after a request for intervention from deposed Ukrainian leader Viktor Yanukovych. Addressing the UNs Security Council, .
