Something strange has been happening all year in Western politics. Both in the United States and Europe, events dismissed as unthinkable have occurred again and again. In June, Britons voted to leave the European Union. In November, Americans elected Donald Trump to be President. In opinion polls throughout 2016, Euroskeptic parties like Lega Nord and the Five Star Movement in Italy and the National Front in France, once derided as fringe movements, have shown continuing appeal. In fact, in Italy, Lega Nord and the Five Star Movement just combined to defeat a constitutional referendum championed by Prime Minister Matteo Renzi, leading Renzi to resign.