Secret Wars #4
It kicks off with the battle of The Cabal vs The Thors with the exposition of what BATTLEWORLD is done off panel by Dr. strange as he speaks to the Final Incursion survivors.
Dr. Strange tries to explain and justify Doom's reign over BATTLEWORLD. Strange's ideology of course is challenged by the survivors but this ends abruptly when they are interrupted by the nascent Thor being summoned into battle against the Cabal.