Urban combat has a brutal, destructive reputation. It will become more common
But it has also brought some needed change to the way justice is administered
Monitoring wastewater can help track diseases, drugs and even explosives
He would know. And internet infrastructure is vulnerable too
Sixty years after the Cuban missile crisis, the world again worries about nuclear war
Vladimir Putin’s attempt at grain blackmail highlights a wider problem
The time to think about reconstruction is long before the fighting ends
In a fracturing world, trade and co-operation will come first
Will America’s president damage the world’s most powerful intelligence pact?
A revealing new history of the cold-war crisis that inspired modern refugee law