It's been 100 years since World War I ended, but there is still very little consensus about what caused it, or what its consequences were. Historian Jonathan Boff talks us through the latest books and best modern interpretations of World War I.

The Greek historian and general Thucydides wanted his History of the Peloponnesian War "to be a possession for all time." In that, he's been remarkably successful, with his name still echoing in the corridors of power. But what lessons should we take away from his great work? Translator and classicist Johanna Hanink talks us through books to better understand Thucydides and the mythical Athens he lived in and wrote about.

The samurai, Japan's warrior caste, have been embraced by popular culture and made their way into films, comic books and video games. But who were they really? Michael Wert, professor of East Asian History at Marquette University and author of Samurai: A Concise History, recommends the best books to learn more about samurai, literally 'one who serves.'

The historian and author pilots us through a century of aviation, from the excitement that greeted the first airplanes to the transformative role of World War II.

It was a war that devastated Europe and left more than one-fifth of the German population dead. The complex peace agreement that ended it, the Treaty of Westphalia, is still credited with establishing our modern state system. Peter Wilson, Chichele Professor of the History of War at Oxford University and author of the most recent general history of the war, Europe's Tragedy: A New History of the Thirty Years War, recommends books to read for a nuanced picture of Europe's cataclysmic 17th-century conflict.

The 19th century opium war marked the clash of the world’s great empires of the age – Britain and China. Historian Julia Lovell says its legacy of Chinese humiliation is still felt keenly in Beijing.

Churchill hailed the Allied victory at the Battle of El Alamein as "the end of the beginning" for Hitler in World War II. But in that very same speech, he downplayed its significance. Historian Simon Ball separates clichés from facts and chooses the best of the vast number of books written about El Alamein, the Desert War and World War II in general.

The former BBC war reporter picks out essential reading on the Bosnia and Vietnam wars and explains why a book of poetry speaks more to him about the reality of conflict than any other writing

The US has repeatedly misdiagnosed the war in Afghanistan. Former soldier, Andrew Exum, tells us about flawed policy, unhappy outcomes and what could and should have been different.

The foreign affairs commentator explains why US presidents have less room to manoeuvre on foreign policy than they think, and why President Obama had to set aside his “minimalist” inclinations.