Between Germany and Russia is a region strewn with monuments to the horrors of war, genocide and disaster - the bloodlands where the murderous regimes of Hitler and Stalin unleashed the violence that scarred the twentieth century and shaped so much of the world we know today. In September 2016 the German-Iranian writer Navid Kermani set out to discover this land and to travel along the trenches that are now re-emerging in Europe, from his home in...