Ukraine

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Pro-Russian activists hunt participants of a pro-Ukrainian rally in Donetsk, Ukraine, Monday, April 28, 2014. About a thousand pro-Russian activists armed with sticks and steel rods attacked the participants of pro-Ukrainian rally in center of Donetsk. Ukraine's acting government and the West have accused Russia of orchestrating the unrest, which they fear Moscow could use as a pretext for an invasion. (AP Photo/Efrem Lukatsky)

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A bloodied man awaits medical assistance after he was beaten by pro-Russian activists in Donetsk, Ukraine, Monday, April 28, 2014. About a thousand pro-Russian activists armed with sticks and steel rods attacked the participants of pro-Ukrainian rally in center of Donetsk. Ukraine's acting government and the West have accused Russia of orchestrating the unrest, which they fear Moscow could use as a pretext for an invasion. (AP Photo/Efrem Lukatsky)

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A pro-Russian activist shouts to police after the explosion of a gas device during a pro Ukraine rally in Donetsk, Ukraine, Monday, April 28, 2014. About a thousand pro-Russian activists armed with sticks and steel rods attacked the participants of pro-Ukrainian rally in center of Donetsk. Ukraine's acting government and the West have accused Russia of orchestrating the unrest, which they fear Moscow could use as a pretext for an invasion. (AP Photo/Manu Brabo)

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A pro-Russian activist is seen while doctors cure his wounds after clashing with pro-Ukrainian activists during a pro Ukraine rally in Donetsk, Ukraine, Monday, April 28, 2014. About a thousand pro-Russian activists armed with sticks and steel rods attacked the participants of pro-Ukrainian rally in center of Donetsk. Ukraine's acting government and the West have accused Russia of orchestrating the unrest, which they fear Moscow could use as a pretext for an invasion. (AP Photo/Manu Brabo)

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Pro-Ukrainian activists clash with pro-Russia activist during a pro Ukraine rally in Donetsk, Ukraine, Monday, April 28, 2014. About a thousand pro-Russian activists armed with sticks and steel rods attacked the participants of pro-Ukrainian rally in center of Donetsk. Ukraine's acting government and the West have accused Russia of orchestrating the unrest, which they fear Moscow could use as a pretext for an invasion.(AP Photo/Manu Brabo)

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A masked pro Ukrainian activist on the street during a pro Ukraine rally in Donetsk, Ukraine, Monday, April 28, 2014. About a thousand pro-Russian activists armed with sticks and steel rods attacked the participants of pro-Ukrainian rally in center of Donetsk. Ukraine's acting government and the West have accused Russia of orchestrating the unrest, which they fear Moscow could use as a pretext for an invasion. (AP Photo/Manu Brabo)

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A pro Russian masked armed man guards at the city hall in Kostyantynivka, 35 kilometers (22 miles) south of Slovyansk, eastern Ukraine, Monday, April 28, 2014, after masked militants with automatic weapons seized the hall building. Ukraine's acting government and the West have accused Russia of orchestrating the unrest, which they fear Moscow could use as a pretext for an invasion. (AP Photo/Sergei Grits)

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A pro Ukrainian man chants slogans against Russian president Vladimir Putin, during a pro Ukraine rally in Donetsk, Ukraine, Monday, April 28, 2014. About a thousand pro-Russian activists armed with sticks and steel rods attacked the participants of pro-Ukrainian rally in center of Donetsk. Ukraine's acting government and the West have accused Russia of orchestrating the unrest, which they fear Moscow could use as a pretext for an invasion.(AP Photo/Manu Brabo)