Grappling with the dark Nazi past of his own family deeply shaped German Vice Chancellor Robert Habeck, he says in a new magazine interview set to be published on Thursday. “Even as a teenager, I was intensively involved with the history of my family,” Habeck told Bunte magazine. Habeck’s great-grandfather Walter Granzow (1887-1952) belonged to the innermost leadership circle of Nazi dictator Adolf Hitler’s regime and was a close friend of Nazi Propaganda Minister Joseph Goebbels. He was also a brigade leader in the notorious Nazi SS paramilitary and was convicted as a war criminal after World…