Geopolitics has never been high on Werner Herzog’s list of concerns, at least in his documentaries. Even when he glances toward current events (“Lessons of Darkness,” “Into the Abyss”), the thrust ...

Even in his dotage, stooped and tissue-skinned and walker-dependent, the former (and final) Soviet Union president Mikhail Gorbachev is an imposing, even intimidating figure — formidable enough to ...