Is that so? ISIS gives everyone a choice of becoming a tributary, leaving, or facing battle? That’s not the impression I’d gotten.
In the original conquest of Eretz Yisrael, led by Yehoshua bin Nun,
we were commanded NOT to give anyone choices, but to wipe them out.
ISIS intends to conquer areas and impose their own law on them, not
to entirely destroy the native populations and replace them.