The Nazis’ relentless persecution of very young Russians – all potential spies – the ‘Children’s Crusade’, and images from war zones. The only thing worse than seeing children murdered is seeing children as murderers. Like those in Cambodia under the Khmer Rouge.

The disasters faced by the Americans when dealing with toilets. And the aircraft carriers with broken toilets in Ukraine, from Vietnam to Afghanistan: the wars that were supposed to be short, the superpowers wearing themselves out, and biting off more than they can chew