Gunnar Myrdal strongly opposed the Vietnam War. In "Asian Drama", Myrdal predicted that land reform and pacification would fail in Vietnam and urged the United States to begin negotiations with North Vietnam. After returning to Sweden, he headed the Swedish Vietnam Committee and became co-chair of International Commission of Inquiry Into U.S. War Crimes in Indochina. He also presided over the Stockholm International Peace Research Institute, an international watch-dog for the arms trade. He was one of the signers of the Humanist Manifesto.