The actor-director's highly anticipated documentary about Volodymyr Zelenskyy and the Ukrainians' fight for democracy has premiered at the Berlin International Film Festival. Three months before the invasion, Sean Penn and his film production team were already in Ukraine, preparing a documentary that would profile Volodymyr Zelenskyy's atypical career trajectory from actor-comedian-producer to president. But that story took an unexpected turn when Russia invaded Ukraine, leading the still relatively inexperienced politician to become a wartime leader. The ensuing documentary, "Superpower," co-directed by Sean Penn and Aaron Kaufmann, premiered on Friday at the Berlinale. The premiere came a day after Penn's appearance...