we didn't attacked BS, we attacked PRIU, at which point in the treaty was it stated that we were supposed to not attack PRIU? Also, during our blitz with BS, we had an agreement with PRIU that we won't attack them if they don't attack us or our allies, turns out they attacked one of our allies.
to finish, we were litteraly just doing a small raid, nothing organised at all, and the moment he declared on us we already had peaced out with PRIU, as you can see with the NAP we signed with them