Freemasonry and the Vatican: A Struggle for Recognition by Vicomte Leon de Poncins (and later expanded by William Von Peters) analyzes the historic conflict between the Catholic Church and Freemasonry. It argues that Masonic principles are fundamentally irreconcilable with Catholic doctrine, detailing attempts by Masonry to gain recognition, particularly after Vatican II. This book is characterized as a, or part of a, trilogy investigating a "secret war" waged by Freemasonry against the Church, providing a traditionalist Catholic perspective.