I read somewhere that the second diplomatic party members included one of Genghis Khan's close relatives who he favored, possibly a brother-in-law or son-in-law. Killing this person caused Genghis Khan to send in the army to settle the score.
> The insult that sparked Genghis Khan to destroy an empire<p><a href="https://douglasadams.com/dna/980707-07-s.html" rel="nofollow">https://douglasadams.com/dna/980707-07-s.html</a>
Was it, by any chance, the apparently innocuous "I seem to be having this tremendous difficulty with my lifestyle," in the Vl'Hurg tongue?