The Vatican: As a World Power is a historical work that explores the Vatican's role on the international stage. It examines the Vatican's political, diplomatic, and religious influence within the context of European and world history, and how the Holy See operates as a global power. The author presents an analysis that strives to remain objective amidst differing views on the Vatican's role. The book provides insight into how the Vatican operates not only as a religious center but also as a significant political force on the world stage.