Wouldn't it be best to buy your time and give ZA the benefit of the doubt, no matter how sceptical you are about them. Stop attacking them and their bases while they've set them to neutral and given them Zoner IFF, along with saying anyone is welcome in the system. If you do that and they keep things that way, then that would be the end of the war and things can go back to normal.
The problem now, and ZA are quite clever doing it. If any other Zoner factions was to attack their bases since they done this "as an act of solving things" and bringing peace back into O74, all it will do is make you look the trouble making culprits (not ZA). So just play along with them for now and see what happens.
