In more length, referring to the discussion here, veering off-topic.
This is how I see it:
That Midular’s assassination happened inside Gallente borders gave Gallente the responsibility to react. An ally was wounded while in their care - had they not acted, it would have been a stain on their honor and a cause for worse than the events in Colelie. If no one else interferes or or until someone else requests authority, in such a case the party hosting or controlling the territory must act, or risk being seen as accomplices in the crime itself.
It does not, however, in a person’s mind who understands kin and blood, make it theirs to judge over in isolation. The blood spilled takes priority, and they have full right to request the case to be handed over. To refuse to do so is to spite their wound because “our territory” is to tell them that their grief is not an issue. It is equivalent to saying that your honor (now stained by having let this happen on your watch) is more important than their grief over a death.
It is, indeed, patronizing and arrogant to the extreme.
Note that I am not saying the Republic Fleet was in the right to cross the border against a treaty over an honor dispute. It was an extremely bad strategic decision that made traitors of us and almost spinned out of control into an actual hot war. But on the level of “whose jurisdiction”, it was justified.
This is one thing that the 1000-posts long thread needs to understand before it can even start dreaming to live up to the promise of peace on the subject line. If we operate solely from ideas of ‘sovereignty’ and ‘authority’ that discount tribe & kin, there cannot be a lasting peace. With anyone.