God's Shadow: Sultan Selim, His Ottoman Empire, and the Making of the Modern World

Trajan: Rome's Last Conqueror

Russia: The Story of War

John Stuart Mill: A Very Short Introduction

The Long Shadow of Default: Britain's Unpaid War Debts to the United States, 1917-2020

In the Path of Conquest: Resistance to Alexander the Great

Charlemagne

Convoy Escort Commander: A Memoir of the Battle of the Atlantic

Crisis Convoy: The Story of HX231, A Turning Point in the Battle of the Atlantic

Music of Exile: The Untold Story of the Composers who Fled Hitler

Rate of Climb: Thrilling Personal Reminiscences from A Fighter Pilot and Leader

The Dangerous Life and Ideas of Diogenes The Cynic

Memories, Dreams, Reflections

1415: Henry V's Year of Glory: Henry V's Year of Glory

The Fears of Henry IV

The Lives of the Artists

The Enlightenment that Failed: Ideas, Revolution, and Democratic Defeat, 1748-1830

Metaphysics

On the Soul & Parva Naturalia

Brunelleschi's Dome: How a Renaissance Genius Reinvented Architecture