At this point C'thonia needs more nobles - we can't hold the regions we do have without police work. Which means we can't go join the war. We have the funds and the desire to do so - but it would mean giving up regions that we need to feed Azros and Hadthes.
If we had a few more nobles, it wouldn't be an issue I don't think, but right now it's more the lack of estates that's hampering war than anything else.
Sadly in the same situation on Dwilight -- it's not a fun one to be in, and hard to get out of. Honestly, I think the solution is giving up regions, but few realms are willing to do that -- and I'd guess even suggesting that to Thain would get you accused of treason.