Netflix has confirmed that its political thriller series, The Diplomat, will return for a fourth season, set to premiere later in 2026. Filming is scheduled to resume in New York and the UK through July 2026. The upcoming season will see Keri Russell reprise her role as Ambassador Kate Wyler, with Allison Janney and Bradley Whitford now series regulars. The series, created by Debora Cahn, follows a US diplomat navigating international crises.