10 Downing Street, the residence of the prime minister of the United Kingdom. (Photo by Getty Images)

Politics

Kurdish fighters in north-west Iran, 1918

The history of the Kurds in Iraq: "the largest people never to have achieved statehood".

Brothers in arms Louis IX on his way to the Seventh Crusade, 1248. The French king kept his three brothers onside – preventing any potential family infighting – by providing them with huge lordships. (Photo by Leemage/Corbis via Getty Images)

How to run a medieval dynasty: survival secrets of ruling royal families.

A man digs a grave in Sarajevo for victims of the war in Bosnia, 1992

Yugoslavia: why shared Slavic identity couldn’t save an idealised nation from fracture and bloodshed.

Who was Britain’s greatest prime minister? Episode 9: Secrets of being a successful leader.

A UFO photographed in New Mexico by a government employee. The image was released by the Aerial Phenomena Research Organization after careful study. It is unknown what the image shows.(Photo by Getty Images)

How UFOs conquered the world – without firing a shot.

Who was Britain’s greatest prime minister? Episode 8: Margaret Thatcher.

Who was Britain’s greatest prime minister? Episode 7: Lord Salisbury.

Who was Britain’s greatest prime minister? Episode 6: Winston Churchill.

Who was Britain’s Greatest Prime Minister? Episode 5: Pitt the Younger.

Apartheid road sign

Your guide to apartheid in South Africa.

Who was Britain’s greatest prime minister? Episode 4: Harold Wilson.

This caricature of those meetings depicts proceedings turning to chaos, thanks to the arrival of Napoleon – freshly escaped from his exile on Elba before 'the cake' (Europe) has even been cut

Europe after Napoleon: what the Congress of Vienna meant for the coalition powers.

British prime minister Clement Attlee reading a document in his office, 27 July 1946. (Photo by Haywood Magee/Picture Post/Hulton Archive/Getty Images)

Clement Attlee: Labour's postwar leader

Who was Britain’s Greatest Prime Minister? Episode 3: Clement Attlee.

British troops guard a wall during the Irish War of Independence, which bears a nationalist message

The Irish Republican Army: a brief guide

Who was Britain’s Greatest Prime Minister? Episode 2: Stanley Baldwin.

Stanley Baldwin in the study at Chequers, the PM's official country residence, c1925

Stanley Baldwin: Britain’s greatest peacetime prime minister?.

How constitutions changed the world.

Who was Britain’s Greatest Prime Minister? Episode 1: Robert Walpole.

A broker looks at his screens at Frankfurt's stock exchange on 15 September 2008. (Photo by Thomas Lohnes/AFP/Getty Images)

The 2008 financial crisis explained

No 10 Downing Street has been home to dozens of prime ministers (and numerous cats) since the iconic residence was first offered to Sir Robert Walpole

23 things you (probably) didn't know about No 10 Downing Street, the official residence of Britain's prime ministers

Robert Walpole, the first prime minister of Great Britain

Robert Walpole: Britain's first prime minister.

Jayaben Desai salutes fellow pickets at the Grunwick film processing factory in 1977

The Grunwick protests: remembering the 1970s strike for migrant workers' rights.

Spy plane photos revealed that missile bases were being built on Cuba, prompting the crisis. (Photo by Hulton Archive/Getty Images)

What if...The Cuban Missile Crisis escalated?.

1871: Otto von Bismarck reads the Proclamation of the German Empire at Versailles following Prussia's victory in the Franco-Prussian War. (Photo by Three Lions/Getty Images)

Germany’s pre-Nazi history: rethinking the Second Reich.

The 1815–46 Corn Laws: your guide to the crisis and why they were repealed

Picture depicting the Cato Street conspirators

To kill the cabinet: the Cato Street Conspiracy of 1820.

Engraved portrait of George Washington, the first president of the United States of America

George Washington: your guide to the war hero, founding father, first US president and slave owner

Otto von Bismarck, pictured on horseback, was instrumental in the creation of a unified German state and was among the most influential politicians of late 19th-century Europe.(Photo by ullstein bild/ullstein bild via Getty Images)

Otto von Bismarck: a brief guide to the ‘founder of modern Germany’

Adolf Hitler photographed with British politician Henry Vane-Tempest Stewart, 7th Marquess of Londonderry (left) and Joachim von Ribbentrop (right), minister of foreign affairs of Nazi Germany from 1938 to 1945. (Photo litzy ullstein bild/ullstein bild via Getty Images)

Making friends with Hitler: Britain’s pre-war admiration for the Nazi dictator