It has been three and a half years since Russian forces annexed the Ukrainian territory of Crimea and then set their sights on the eastern region, supplying arms, tanks and advisers to Russian-centric insurgents there.
Russia's War Against Ukraine
Ukraine-U.S. Relations
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Boston Herald: Taking on Vladimir Putin
People are looking for their belongings in a collapsed apartment because of the shelling in Avdiyivka on Feb. 19.
