Ukraine

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Pro-Russian activists gather in front of an entrance of the Ukrainian regional office of the Security Service in Luhansk, 30 kilometers (20 miles) west of the Russian border, in Ukraine, Tuesday, April 8, 2014. The Donetsk and Kharkiv regions and a third Russian-speaking city besieged by pro-Moscow activists over the weekend, Luhansk have a combined population of nearly 10 million out of Ukraine's 46 million, and account for the bulk of the country's industrial output. (AP Photo/Igor Golovniov)

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National Edition News cover for April 9, 2014 - Senators demand arms for restive Ukraine: Secretary of State John Kerry appears before the Senate Foreign Relations Committee to discuss his budget and the status of diplomatic hot spots, on Capitol Hill in Washington, Tuesday, April 8, 2014. Lawmakers' questions focused on Russia, Ukraine, Iran and Syria. Kerry, a former chairman of the Foreign Relations Committee, threatened Russia with tougher economic sanctions if it fails to back down from its chaotic involvement in Ukraine. (AP Photo/J. Scott Applewhite)

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Secretary of State John F. Kerry defends the Obama administration's response to Russia's moves on eastern Ukraine during a Senate Foreign Relations Committee hearing. (Associated Press Photographs)

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Pro-Russian activists set their flags over the entrance to the regional administration building in Donetsk, Ukraine, where they dug in for their third day.

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Communist lawmakers scuffle with right-wing Svoboda (Freedom) Party lawmakers during a parliament session of Verkhovna Rada, the Ukrainian parliament, in Kiev, Ukraine on Tuesday, April 8, 2014. (AP Photo/Vladimir Strumkovsky)

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Smoke from a bonfire rises over the barricade as pro-Russian demonstrators protest outside the regional administration building in Donetsk, Ukraine, Monday, April 7, 2014. Ukraine's acting president Turchynov said early Tuesday April 8, that security forces have re-taken control of the Kharkiv administration building , in address to parliament. (AP Photo/Andrey Basevich)

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People gather near a barricade built up to thwart police from retaking the regional administration building in Donetsk, Ukraine, late Monday. (Associated Press)

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A masked man stands atop of a barricade with the poster reading " No fascism!" at the regional administration building in in Donetsk, Ukraine, Monday, April 7, 2014.A Ukrainian news agency is reporting that pro-Russian separatists who have seized the regional administration building in the eastern Ukrainian city of Donetsk proclaimed the region an independent republic. The activists on Monday also called for a referendum on the sovereignty of the Donetsk region, which borders Russia, to be held no later than May 11, the Interfax news agency reported.(AP Photo/Alexander Ermochenko)