Merkel departs: Political genius or world-class pragmatist?

From a token woman in East Germany to the leader of the free world. After four terms, or sixteen years, in office, that same Angela Merkel is stepping aside as German chancellor. So, what will her legacy be? Does she leave behind a Germany more united, or more divided? What are her greatest achievements? And her biggest mistakes? Above all, perhaps: who is the real Angela Merkel and how has she survived so long? Our guests: the Merkel biographers Ursula Weidenfeld, Ralph Bollmann and Andreas Rinke.