We should be asking ourselves what our Archduke Ferdinand moment will be. How will an apparently small event trigger another period of massive destruction. We see Brexit, Trump, Putin in isolation. The world does not work that way — all things are connected and affecting each other. I have pro-Brexit friends who say ‘oh, you’re going to blame that on Brexit too??’ But they don’t realise that actually, yes, historians will trace neat lines from apparently unrelated events back to major political and social shifts like Brexit.