The high-stakes political thriller returns! Netflix drops all eight episodes of The Diplomat Season 4 on October 15, 2026.

Keri Russell and Rufus Sewell face a crumbling marriage and a global conspiracy as the White House turns against itself. With Allison Janney and Bradley Whitford joining the chaos, this season promises a lethal, adrenaline-fueled ride.

Prepare for pure, unadulterated political warfare.