The Diplomat' Review: Dizzying Twists Make Thrilling Season 4 Edge-of-the-Seat TV

The fourth season of the Emmy-winning political drama The Diplomat leans into faster, higher-stakes twists and sharper interpersonal tension, according to this review. Series creator Debora Cahn, known for The West Wing, blends escalating global intrigue with witty dialogue as U.K. ambassador Kate Wyler (Keri Russell) navigates crises and mounting secrets. The show’s political plotlines trace back to an earlier false-flag attack involving a British aircraft carrier and the involvement of former Vice President Grace Penn (Allison Janney). Season 3’s cliffhanger continues into Season 4 with Kate learning Grace and Hal (Rufus Sewell) removed a doomsday nuclear weapon from a Russian sub.