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‘The Diplomat’ Season 3 Launches on Netflix, Introducing Allison Janney as U.S. President

The new season sharpens the show's twist‑driven diplomacy by pushing US–UK tensions to the brink.

Overview

  • Netflix released the third season worldwide on October 16, 2025.
  • Allison Janney debuts as President Grace Penn, and Bradley Whitford joins as First Gentleman Todd Penn.
  • Keri Russell and Rufus Sewell return as Kate and Hal Wyler, with their marriage and ambition remaining pivotal to the story.
  • The narrative heightens questions over whether presidential decisions could strain relations between the United States and the United Kingdom.
  • The series maintains its unpredictable, multi‑layered political‑thriller tone, and Netflix has already ordered a fourth season.