The Treaty of Versailles is often named as the main cause of World War II. But this is an overly simple explanation.
America finds itself in uncharted territory under Donald Trump – not least when it comes to climate change and Israel policy.
In the 20th century, governments considered the “total abolition” of passports as an important goal and discussed the issue in several international conferences.
The rise of Islamic State and its declaration of the caliphate can be read as part of a wider story that has unfolded since the formation of modern nation states in the Muslim world.