"March 24, 2015: People gather around an U.S. Army 2nd Cavalry Regiment ""Stryker"" armored fighting vehicle in Bialystok, Poland, which is a part of the U.S. military ""Dragoon Ride"" operation. Dragoon Ride is aimed at demonstrating commitment to NATO allies in light of Russia's aggression in Ukraine, according to the U.S. Army."
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