Our “Water Wars video” series chronicles the uniting of the Tribes of the Oceti Sakowin to stop the Dakota Access pipeline (DAPL). In the twelfth chapter, we share the history of our water rights on the Mni Sose, or Missouri River, as dictated by the 1868 Treaty of Fort Laramie. We address the threat of theft of our water for mining projects amid drought and the climate crisis, and we declare our water sovereignty in no uncertain terms.