Roosevelt helped Panama gain independence from Colombia in order to build the Panama Canal. He also mediated the Russo-Japanese War and established the Roosevelt Corollary, stating the US would intervene to protect its interests in Latin America. Taft continued Dollar Diplomacy by guaranteeing private US loans abroad. Wilson believed the US had a moral duty to promote democracy in Latin America, but this caused tensions with Mexico during its revolution as the US sent troops after Pancho Villa.