Alright, so let me list the outcomes of the supposed 'war' which may or may not happen
1.) XD Wins, Etk steps down, Canterlot becomes a (hated) member of the XD Kingdom. All Alliances with FE will have been broken of, stemming from the fact that FE fought with CT. This, in turn, leaves both FE and XD weaker Kingdoms
2.) FE wins. Canterlot becomes an independent town, but I highly doubt XD would allow them back in. In turn, CT may join FE, or continue on its own. Under this outcome, XD becomes weaker, FE gains an strong alliance, or even another kingdom town (CT) but loses any alliance with XD.
3.) There, of course, are other outcomes, but these are the most obvious and most likely. Both outcomes leave both Kingdoms weaker, whether or not either one wins. So why are you fighting this? I dont care how much CT has pissed you off or how much Etk is disobeying orders. Theres always a peaceful way, in which both sides win. War does not build, war destroys, and at this point in time, I do not believe it is in either kingdoms interest to further their own downfall
Edit: I praise Xexo in his ability to take down swears and disparage at Etk, that is what you need to solve this. Angering the other side further should not be an interest during this period.