Indeed, Chancellor Angela Merkel has bravely asserted “the fundamental right to asylum for the politically persecuted with no upper limit; and that goes for refugees who come to us from the hell of civil war.” But other European leaders, faced with the rise of extremist, anti-immigrant parties, have not endorsed Merkel’s view; and the refugees still have to get to Germany through countries like Hungary, which are erecting walls and other border defenses to keep them out.