The cast of The Diplomat, including Keri Russell, Rufus Sewell, Allison Janney, and Bradley Whitford, has been discussing the show's third season. The season appears to involve shifting power dynamics and a significant cliffhanger, with some cast members hinting at betrayal and a character's struggle to adapt to a new role. The season also explores a crumbling marriage amidst international turmoil, and features new additions to the cast, although details about the season's plot and outcome are not fully clear.