The Diplomat Season 4: A Sharper, More Addictive Return to Form

Lacy Baugher calls The Diplomat one of streaming’s most reliably entertaining shows and sees Season 4 as a clear rebound from the third. She’s most taken with how the eight episodes return to the Wylers’ marriage, which now runs on real friction instead of cheating plots, and with the warm, worn-in rapport between Allison Janney and Bradley Whitford.

She admits the global scheming has drifted past plausibility, some policy debates feel lopsided, and Rory Kinnear and Aidan Turner get pushed to the side. Still, Jodie Whittaker’s late arrival adds a jolt, and Baugher finds the whole season very hard to stop watching. Lacy Baugher, RogerEbert.com

Kelly Woo goes even further, naming this the show’s finest season and one of Netflix’s top dramas. She praises plotting that is dense but never confusing, singles out Allison Janney’s awards-worthy work next to a Bradley Whitford who finally has meaty material, and enjoys Jodie Whittaker as a formidable new sparring partner for Kate.

Woo’s complaints are minor. Russia looms as a threat without truly showing up, which blunts some consequences, Kate’s spark with Austin Denison is mostly missing, and her fling with Aidan Turner’s Callum leaves Woo cold. The Wylers’ gloriously messy marriage keeps everything anchored. Kelly Woo, Tom’s Guide

Sherin Nicole is the dissenting voice, arguing that the show has gone soft. The Windsor Castle opener grabs her, and she still relishes Rory Kinnear’s erratic prime minister and the steadier pairing of Ato Essandoh and Ali Ahn, but by the halfway point her patience was wearing thin.

Her main issue is that both power couples have slipped into the same cycle of squabbling, so the world-shaking stakes start to feel petty. A couple of late twists and a game-changing finale give her hope, though she thinks the Kate and Hal dynamic badly needs a shake-up. Sherin Nicole, RIOTUS

The consensus: Most critics call Season 4 a high point, praising the cast, the Janney–Whitford pairing and the sharper focus on the Wylers’ marriage, while one finds the bickering repetitive and the stakes diminished. The plotting strains belief, but the verdict leans strongly positive: this is still one of Netflix’s most bingeable dramas.