Influence of secret societies

In his writings, he denounced Masonic conspiracies (pointing out the relationship between Freemasonry and the French Revolution, the League of Nations, etc.), and the Jewish influence in Catholic affairs.

His work was seen as a continuation of the Revue Internationale des Sociétés Secrètes (International Review of Secret Societies), whose primary editor was Mgr. Ernest Jouin (1844–1932).

Léon de Poncins was a friend of Emmanuel Malynski (died 1938)— with whom he wrote La Guerre occulte (The Occult War)^[1]— and Jean Vaquié (1911–1992), with whom he wrote in the journals Lectures françaises and Lecture et Tradition, and for the Chiré-en-Montreuil-based publishing house Éditions de Chiré. Léon de Poncins wrote the preface to Vaquié's La Révolution Liturgique ([The Liturgical Revolution]).^[2]

Julius Evola translated La Guerre occulte into Italian.^[3]

In a 1949 letter from René Guenon to Evola, he expresses a belief that Léon de Poncins was subjected to attacks from "a group of dangerous sorcerers" who were connected to his secretary, Eve Louguet.^[4]

On World War I

In his historical analysis of the First World War, Léon de Poncins suggests that concerted lobbying by international Zionist circles led to the creation of the future Jewish state in Palestine by means of manipulating alliances and oppositions between countries. In 1916— at a time when Germany triumphed on all fronts and the British planned to sign an armistice then advanced by the Kaiser— Zionists secured a promise of Palestine (then under the domination of the Ottoman Empire) as a Jewish settlement from the government of Britain in exchange for the United States' entry into the war alongside the Triple Entente. To corroborate his thesis, Léon de Poncins cited Great Britain, The Jews and Palestine, a 1936 book by pro-Zionist author, Samuel Landman.

On Vatican II

During the Second Vatican Council, following the vote on 20 November 1964, at the third session of the provisional scheme dealing with the Church's attitude towards Judaism, Léon de Poncins wrote a pamphlet, Le Problème juif face au Concile (The Jewish Question Facing the Council), which was distributed to the bishops before the fourth and final session. The author noted "by the Council Fathers a profound misunderstanding of what constitutes the essence of Judaism." Léon de Poncins' advice had a significant effect on the drafting of Nostra aetate, adopted on 28 October 1965.^[5]