Books:
* La Mafia: Storia e potere (The Mafia: History and Power): A comprehensive analysis of the Mafia, its origins, evolution, and impact on Italian society. This is considered one of his most important works.
* La Mala Società: Il potere occulto in Italia (The Bad Society: The Hidden Power in Italy): This book explores the complex network of power and corruption in Italy, examining various groups and individuals who influence politics and society.
* Il golpe bianco: L'Italia tra terrorismo e strategia di tensione (The White Coup: Italy Between Terrorism and Strategy of Tension): Deaglio investigates the "strategy of tension," a theory that suggests a coordinated effort by powerful groups to destabilize Italy during the Cold War.
* L'Italia che cambia: Una storia del decennio perduto (The Changing Italy: A History of the Lost Decade): This book examines the economic and social changes that occurred in Italy during the 1980s.
* La Grande Guerra Fredda: Storia del mondo dal 1945 al 1991 (The Great Cold War: A History of the World from 1945 to 1991): A detailed account of the Cold War era, encompassing its political, economic, and ideological aspects.
* Il sistema: Come funziona la politica italiana (The System: How Italian Politics Works): An analysis of the Italian political system, its actors, and its dynamics.
* La politica internazionale: Un'introduzione (International Politics: An Introduction): A textbook on international relations, exploring various theories and concepts.
* Il secolo breve: Storia del mondo dal 1914 al 1991 (The Short Century: A History of the World from 1914 to 1991): A concise but comprehensive overview of the 20th century.
Articles and Essays:
Deaglio has published numerous articles and essays in leading Italian newspapers and magazines, covering a wide range of topics, including:
* Politics and society: He has written extensively on Italian politics, international relations, and social issues.
* History and current affairs: He often analyzes historical events and their relevance to contemporary situations.
* Criminology and organized crime: He is a leading expert on the Mafia and other criminal organizations.
In addition to his writing:
* Deaglio has also been a political commentator on television and radio.
* He has lectured at universities and other institutions.
* He is a regular contributor to debates and conferences on various topics.
Overall, Mario Deaglio is a prominent figure in Italian intellectual life, known for his insightful analysis of complex issues and his ability to connect history with contemporary affairs.