AI Summary

In season 4 of *The Diplomat*, the British Foreign Secretary Austin Dennison dies in a sudden, off‑screen tragic accident that is announced abruptly, without any on‑screen depiction. The death is revealed before actor David Gyasi appears in the new season, instantly setting the season’s chaos in motion. Dennison had been a steady presence in the first three seasons, keeping Prime Minister Nicol Trowbridge under control and serving as a natural ally to Ambassador Kate Wyler. Their relationship had a brief romantic arc early in the series, and by season 3 Dennison was married while maintaining a positive working partnership with Wyler.

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