Kammala jumla mai zuwa: An haifi Molinier a birnin Paris. A cikin 1929, ya kafa jaridar "La Vérité", kuma a watan Maris na 1936 shi da Pierre Frank sun kafa Parti communiste internationaliste, wanda ya haɗu tare da wasu ƙungiyoyi biyu don samar da Parti ouvrier internationaliste a watan Yuni na wannan shekarar. A lokacin yakin duniya na biyu Molinier ya kasance a kasashen waje kuma ya dawo ne kawai bayan da
dakatar da tashin hankali. Daga baya ya kasance mai aiki tare da Ligue communiste révolutionnaire (LCR). Daga bisani, ya koma Latin Amurka inda ya yi aiki a matsayin wakili ga ayyukan leken asirin Birtaniya, a karkashin sunan "Leon Droeven".