 Complete the following phrase:  During a political crisis in the summer of 1962, when Algeria was officially established, the Provisional Government of the Algerian Republic was defeated by the National Liberation Army and the Oujda Group, led by Houari Boumédiène and allied with Ahmed Ben Bella. The leaders of the Wilaya units attempted to regain power. In June 1963, he helped to create the Union pour la défense de la révolution socialiste, an underground party led by Krim Belkacem. Alongside Mohand Ouladj, Bouregaa acted as an intermediary between Belkacem and Hocine Aït Ahmed, the latter of which founded the Socialist Forces Front. The Socialist revolt was crushed at the beginning of 1964, shortly before the 