In addition to Streep and Hanks, there's Matthew Rhys as Ellsberg, Bob Odenkirk as Ben Bagdikian, Bruce Greenwood as Bob McNamara, Carrie Coon as Pulitzer -
winning editorialist Meg Greenfield; and beyond that, Tracy Letts, Sarah Paulson, Bradley Whitford, Alison Brie, David Cross, Jesse Plemons, Zach Woods, and others.