During the Second World War and the Nazi occupation of France, Frank wrote for the collaborationist weekly Les Nouveaux Temps, but he was known as a critic of the collaborationist Vichy government's censorship policies. He also wrote for the French film magazine L'Écran français, a socialist-leaning magazine founded by the Resistance during the war, which continued after it.
During World War II and under Nazi occupation in France, Frank wrote for Les Nouveaux Temps, a collaborator weekly, but he was known for his criticism of the Vichy government's censorship policies. He also contributed to L'Écran français, a socialist-leaning magazine founded by the Resistance during the war that continued after the conflict.