The article contains spoilers for The Diplomat season 2.The Diplomat season 2 ending gets addressed by showrunner Debora Cahn. In its return to Netflix, with a fast-paced six-episode installment, the political drama wraps up the explosive conclusion that left the fate of key characters in doubt. It then turns its attention to the machinations in the White House that rope in Kate Wyler (Kerri Russell), introducing Allison Janney’s Vice President Grace Penn. Her appearance inadvertently leads to the death of President William Rayburn (Michael McKean) in The Diplomat season 2 finale. Rayburn dies after he’s informed by Kate’s husband, Hal (Rufus Sewell), that Penn had ties to a false attack.

https://screenrant.com/the-diplomat-season-2-ending-future-impact-explained-debora-cahn/