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The Donbas War, also known as the Russo-Ukrainian War, is a war in Donbas that began in April 2014. It is the result of the Ukrainian Revolution of Dignity, which led to the ousting of President Viktor Yanukovych. The war is fought between Ukrainian government forces and pro-Russian separatists, who are supported by Russia. The conflict has caused significant damage to the region and has led to a humanitarian crisis.