A Distant Mirror: The Calamitous 14th Century

Achtung Panzer!

On Democracies and Death Cults: Israel, Hamas and the Future of the West

Amsterdam: A History of the World's Most Liberal City

How the Irish Saved Civilization: The Untold Story of Ireland's Heroic Role from the Fall of Rome to the Rise of Medieval Europe

Say Nothing: A True Story of Murder and Memory in Northern Ireland

Oathbreakers: The War of Brothers That Shattered an Empire and Made Medieval Europe

The War in the West - A New History: Volume 1: Germany Ascendant 1939-1941

Catastrophe: Europe Goes to War 1914

The Secret of Chanel No. 5: The Intimate History of the World's Most Famous Perfume

The Glorious Heresies: 'A big, brassy, sexy beast of a book' IRISH TIMES

The Perfect King: The Life of Edward III: The Life of Edward III

Avenue of Spies: A True Story of Terror, Espionage, and One American Family's Heroic Resistance in Nazi-Occupied Paris

Red Sky in Morning: author of the 2023 Booker Prize-Winning novel Prophet Song

The Crooked Branch

Sicily: A Short History, from the Ancient Greeks to Cosa Nostra

Joan of Arc: A Life Transfigured

The Mysterious Case of Rudolf Diesel: Genius, Power, and Deception on the Eve of World War I

Millennium: The End of the World and the Forging of Christendom