(Warning: Spoilers ahead.)

Betrayal comes in all shapes and sizes on The Diplomat. The Season 3 finale doesn’t hold back, dropping a bombshell and matching the show’s previous audacious cliffhangers.

Sure, there are zero explosions, and a world leader doesn’t die. But Kate Wyler (Keri Russell) learns her husband’s relationship with the president has gone to the next level.

No, Hal (Rufus Sewell) isn’t sleeping with President Grace Penn (Allison Janney), but the Brits are getting f---ed again, and Kate has unknowingly facilitated the whole thing.

Going into the finale, relations with the British government are frosty. Okay, that is putting it mildly. They are at an all-time low, and Grace doesn’t want to be the first sitting president since James Madison to fight the Red Coats. Still,

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