- Keri Russell (Ambassador Kate Wyler)
- Rufus Sewell (Hal Wyler)
- David Gyasi (Foreign Secretary Austin Dennison)
- Ali Ahn (Eidra Park)
- Rory Kinnear (Prime Minister Nicol Trowbridge)
- Ato Essandoh (Stuart Hayford)
- Bradley Whitford (Todd Penn)
- Allison Janney (President Grace Penn)
The Diplomat — S4E2
Episode: Redcoats
Air Date: 2026-10-15
Runtime: 42 min
Overview
A shocking security breach sends the administration into crisis as Hal assumes new duties. Trowbridge launches a manhunt, and Kate looks to the future.