A wave of extremist far-right movements with chilling echoes of the Nazis is being “fueled” by Donald Trump, writes Sadiq Khan on 80th anniversary of World War II. The rise of far-right movements and leaders — fueled by President Donald Trump, the “global poster boy for white nationalism” — threatens to wipe out the lessons of World War II, London Mayor Sadiq Khan charged in a scathing essay Saturday. “An entire generation of brave men and women around the globe sacrificed everything to defeat the singular evil of Nazism and fascism,” Khan wrote in The Observer to mark the 80th...