I'm a big fan of Greta Thunberg, so I'm pleased to see her on the cover of Time. But Person of the Year is for the most impact, good or bad, on the world. And that has to go to Vladimir Putin. He's played an absolute blinder, every year since 2015, achieving feats so improbable, oddsmakers must think we're living in a parallel universe. The UK voted to make themselves poorer. Putin installed a puppet into the White House, a puppet he controls up to the elbow, the way Jim Henson controlled Kermit. And today, if the Tories win the UK election, Putin seals the deal on ejecting the UK from the EU. That, sadly, is megatons more impactful than people worldwide marching in the streets, calling for change. (Sorry to be the Grinch.) Think of where Putin was in 2015, and think of where he is now. This underdog couldn't challenge the EU or US with military might. So he had to be clever. And now he owns the US, the UK, and has hobbled the EU. Give the man his Time cover. But be careful. If he takes it the wrong way, journalists have a habit of dying.