Your best bet is to hope the AI WANT a ceasefire, its happened to me before, my stupid ass just says no when I really need it lol. Most of the time they ask for cash, sometimes for settlements. When they ask me for settlements, I send them a big F U to the face, while if they ask for cash and I screw up, like asking them for maps if I give em cash, I just give em the amount they asked for later or just a bit more.

Simple eh?

If not just kill those evol evol bastids ';..;'