The ongoing conflict in eastern Ukraine originated from the Soviet era population mixing of ethnic Russians and Ukrainians in the industrial east. This has led to a divided country with the eastern regions leaning more towards Russia. Political upheaval in 2014 resulted in the overthrow of the pro-Russian government and Russia's annexation of Crimea. Since then, separatist movements backed by Russia have fought Ukrainian government forces for control of the Donetsk and Luhansk regions, displacing over a million people. Ceasefires have failed to hold and the conflict has escalated, with disagreements over Russia's role and the potential for further international involvement.