False dilemma to claim that the only choices are taking revenge and doing nothing at all.
Lawler did not claim that massacre of the innocent, or surrender, were the only two choices. He specifically called them "two unhelpful emotional reactions."
He knows--- and you do too ---t hat there's a difference between indiscrimiante killing, which is murder, and descrimiante killing --- targeing the aggressor and his assets, in order to destroy them --- which constitutes a Just War.