Organized labor celebrated the outcome as a victory for the UMWA and American Federation of Labor unions generally. Membership in other unions soared, as moderates argued they could produce concrete benefits for workers much sooner than radical Socialists who planned to overthrow capitalism in the future. Mitchell proved his leadership skills and mastery of the problems of ethnic, skill, and regional divisions that had long plagued the union in the anthracite region. By contrast the strikes of the radical Western Federation of Miners in the West often turned into full-scale warfare between strikers and both employers and the civil and military authorities. This strike was successfully mediated through the intervention of the federal government, which strove to provide a "Square Deal"—which Roosevelt took as the motto for his administration—to both sides. The settlement was an important step in the Progressive era reforms of the decade that followed. There were no more major coal strikes until the 1920s.