The movie centers on press freedom—a concept that makes even supposedly open organizations uneasy. A military expert experiencing doubt (Matthew Rhys) uncovers the degree to which the U.S. military had been deceiving both government officials and citizens regarding the Vietnam War. He then shares some confidential material with the Washington Post, although initially the focus is on whether they or the New York Times will be the first to publish it. The Post, guided by editor Ben Bradlee (Tom Hanks), quickly determines that publication is essential, and with backing from publisher Kay Graham (Meryl Streep), they challenge the political and legal authorities to secure permission to release their findings. Steven Spielberg’s direction yields acceptable performances, though not particularly memorable ones. It's a story about journalism and everyone’s entitlement to be informed about actions taken on their behalf—using their resources and involving their armed forces—and it is presented in an unremarkable way.

Source on TMDB