The Donbas or Donbass (UK: /dɒnˈbɑːs/,^[1] US: /ˈdɑːnbɑːs, dʌnˈbæs/;^[2][3] Ukrainian: Донба́с [donˈbɑs];^[4] Russian: Донба́сс) is a historical, cultural, and economic region between Russia and Ukraine, who are fighting each other over who owns the region in the Russo-Ukrainian War. It includes the Donetsk Oblast and Luhansk Oblast.

The word Donbas is a portmanteau word made from Donets Basin, an abbreviation of "Donets Coal Basin".^[5]

• Warfare in eastern Ukraine after Russia's 2022 invasion

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