yuri is obviously doing it for the other kingdom. pretty smart of her, actually; to be able to control all those guys is interesting.
so towair is still trying to get the kingdom after generations huh,why didn't the two countries establish a peace treaty -- and not just a ceasefire -- during that time? this is happening because the war isn't over yet (just ceasefire) and both countries/kingdoms are still cautious of each other.
Towair Is lacking in natural resources. Which means that percentage, maybe even a considerable one, of its ppl are dying of starvation. But if the war had dragged on, they would have lost/died out. Whereas Tasmeria would've suffered only heavy losses.
So in the case of towair, it was a war of necessity and then a ceasefire of necessity becuz there was only either ceasefire or fight until total annihilation. If there was a peace treaty, for towair it would've only meant a slow death. They'd just been bidding their time and gathering their forces, so they could maybe attack in a different way(like from the inside) to weaken Tasmeria so their gathered forces would be enough to win.
Tasmeria only defended itself when attacked and suffered heavy losses, that could still potentially destabilize the country. Cuz the nobles have their own land and could secede from Tasmeria if it looks like staying would bankrupt them or something. In the middle of war, the royal family couldn't have spared anyone to stop the seceding nobles. And once enough nobles secede, taking with them their land, resources and manpower. Any country from the surrounding could've destroyed it easily.
So, both countries reluctantly agreed to ceasefire out of necessity. Peace treaty would only benefit one, so it is very unlikely in the current situation. Hence, the two countries are in a cold war situation, where hostilities could erupt any moment.