Soro led the Patriotic Movement of Côte d'Ivoire (MPCI) in a September 2002 rebellion against President Laurent Gbagbo that triggered the Ivorian Civil War. In December 2002 Soro's MPCI combined with two other rebel groups, the Ivorian Popular Movement of the Great West (MPIGO) and the Movement for Justice and Peace (MJP), to form the New Forces ("Forces Nouvelles de Côte d'Ivoire"). He was appointed as Secretary-General of the New Forces.