Before the war I already knew what the coalition wanted and was already offering it to them before the war had even started to Hungary but was turned down. Ottomans declared the war still and when I offered my unconditional surrender he ignored it and kept occupying my stuff in order to devastate me completely so I can not turn around in the future. (Why fight a war you can't win when you can recover instead and come back later). So I decided I had better stuff to do during my work hours and left.
And yes I've already proposed a mechanic for how to let players surrender unconditionally but at the same time saving their nation from hostile nation ruining.
How do you think such a mechanic would work?
Maybe you surrender and the other war leader is forced to take up to 100% warscore of a peace deal?