Honestly this is the worst move D'Hara has ever made. Now Luria hates them, the maroccidenians hate them, Sanguis Astroism will probably hate them and I doubt that even the south likes them considering the outright backstabbing.
Seriously, when you're more backstabby than the Lurians... this is just diplomatic suicide.
I have no idea what you guys are talking about, please back it up. This was just a mess of circumstances. The defection of the Western Marches was unannounced and the Ambassador made a mistake. How do you assume this is malicious? We all wanted peace too.