Ukraine's acting president says its military is "on full combat alert" against a possible invasion by Russian troops massed on the border.
ພາບຫຼ້າສຸດ ຈາກ ຢູເຄຣນ
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Members and supporters of Ukrainian far-right radical groups take part in a torchlight procession to commemorate people killed during protest rallies held by Euromaidan movement, Kyiv, April 29, 2014.
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A pro-Russian activist waves a Donbas Republic flag over a crowd celebrating the capture of an administration building in the center of Luhansk, April 29, 2014.
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Pro-Russian armed men stand guard at a checkpoint after pro-Russian activists set tires on fire when Ukrainian soldiers arrived on armored personnel carriers, in the outskirts of Slovyansk, April 30, 2014.
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A woman leaves the regional government headquarters as pro-Russian armed men sit at its entrance in Luhansk, April 30, 2014.