Keri Russell’s Ambassador Kate Wyler’s is plunged into an unstable foreign plot in her trial run for VP Keri Russell as Kate Wyler in a still from "The Diplomat." “The Diplomat” Season 2 is here and ready plunge us into the world of international scheming and political espionage once again. Picking up after the major cliffhanger in the Season 1 finale, “The Diplomat” Season 2 sees Keri Russell’s Ambassador Kate Wyler reckon with her newfound suspicion of the British PM while awaiting word on