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Jon Don Ilone Reed, an Army veteran and member of South Dakota's Cheyenne River Sioux Tribe, poses for a photo at an oil pipeline protest near the Standing Rock Sioux reservation in southern North Dakota, Thursday, Aug. 25, 2016. Reed said he fought in Iraq and is now fighting "fighting for our children and our water." (AP Photo/James MacPherson)

Iraq War

President Obama announced on Oct. 21 that the United States is pulling all its troop from Iraq by the end of the year. (ABC News)