Television periodically confronts this kind of thing (on “Big Little Lies,” say), but if you’re wondering when it was that a movie last dealt with the subject of separation on such a big-picture scale, you might have to go back 40 years — to the era of “Kramer vs. Kramer,” “Scenes from a Marriage,” and “Shoot the Moon.”
Other American films about divorce (a mini-canon that includes Kramer vs. Kramer , Shoot the Moon and, yes, The War of the Roses ) have portrayed this phenomenon — the legal process driving and shaping the couple’s feelings rather than vice versa — but none with the force and clarity of this one.