In recent years, internationalism -- cooperation among nations for promotion of the common good -- has acquired a bad reputation.  But this loss of support for internationalism, especially among progressive thinkers and activists, is based upon a hijacking of the term by the leaders of the major powers, who have employed it to mask their struggles for world dominance.  Cooperative internationalism is quite different, and could prevent international aggression, as well as address the climate catastrophe, the refugee crisis, the destructive policies of multinational corporations, and worldwide violations of human rights.