Matt Carr

‘War is an uncivil game and can’t be civilised’, said one Union sergeant of General Sherman’s rampage through Georgia in 1864. Matt Carr discusses this turning point in the American Civil War.

The right to determine who enters its territory has always been seen as a test of a state’s sovereignty, but the physical boundaries have often been vague, says Matt Carr.

The expulsion in 1609 of more than 300,000 Spanish Moriscos – Muslim converts to Christianity – was a brutal attempt to create an homogenous state, writes Matt Carr.

A century ago international anarchists were causing public outrage and panic with their terror tactics. Matt Carr considers the parallels with al-Qaeda today.