“Wouldn’t you go to prison to end this war?” says the young Daniel Ellsberg in this expertly crafted, Oscar-nominated documentary, which follows the whistleblower’s efforts to stop the Vietnam War by leaking Pentagon documents to the New York Times. Through Ellsberg’s own narration, the film skillfully intertwines his personal evolution–from hawkish Beltway insider to antiwar hero–with a detailed accounting of his case and its lasting ramifications for dissent and the freedom of the press.