The newspaper frequently served as a reflector of Soviet state propaganda, in late 40's engaging in defense of pseudo-scientific Lysenkoism. Pierre Daix wrote "French scientists recognize superiority of Soviet science" article which was then reprinted in Eastern Bloc newspaper, intending to create an impression that Lysenkoism was already accepted by the whole progressive world.
Kravchenko case
In 1949, Soviet dissidentVictor Kravchenko sued the newspaper in a polemical and a sensational trial. After the publication of his book I Chose Freedom, which denounced the Soviet Gulag camps, Les Lettres Françaises accused him of being an agent of the United States, and backed this claim with false documents written by journalist André Ulmann. The truth about the origin of these documents were not known until the late 1970s. Kravchenko filed a complaint for defamation against the newspaper, which was defended by counsel Joe Nordmann. The trial, dubbed "the trial of the century", held in 1949 brought together a hundred witnesses. The Soviet Union presented Kravchenko's former colleagues and his former wife to denounce him. Kravchenko's legal team enlisted testimonies from the survivors of Soviet prison camps. Among them was Gulag survivor Margarete Buber-Neumann. At the time of Molotov-Ribbentrop Pact, she had moved to Nazi Germany and was again imprisoned. Her experience helped anti-communist groups in stating that there was a close similarity between the Soviet and the Nazi regimes. The trial was won by Kravchenko in April 1949, and he received a nominal sum for libel.
Disappearance and reemergence
Les Lettres Françaises was edited by Aragon between 1953 and 1972. During this interval, it supported De-Stalinization and liberalization efforts, looked with sympathy toward the Prague Spring, and, in August 1968, criticized the Soviet invasion of Czechoslovakia. The latter decision proved problematic, as the Soviet government decided to withdraw its subsidies, as did the French Communist Party. Consequently, the review was stripped of its financial lifeline and eventually ceased publication. Since the 1990s, the literary magazine is published on the first Saturday of each month, with the newspaper L'Humanité. It has columns on Letters, Arts, Cinema, Theater and Music, and publishes the works of debuting prose writers and poets. Its new head editor is Jean Ristat.