Let's assume that the USA wants to WIN for the purpose of this threat.
first of all if anyone "wants" to win they have already lost.
How can Terror bring the USA down to it's knees?
the only way to win this war is to ask yourself: what is terror?
Terror: intense, sharp, overmastering fear.
and what is fear?
Fear: a distressing emotion aroused by impending danger, evil, pain, etc., whether the threat is real or imagined; the feeling or condition of being afraid.
so terror and fear are emotions. and what is an emotion?
Emotion: an affective state of consciousness in which joy, sorrow, fear, hate, or the like, is experienced, as distinguished from cognitive and volitional states of consciousness.
what is consciousness?
Consciousness: the thoughts and feelings, collectively, of an individual or of an aggregate of people.
this means Terror is Thought.
so what is winning?
Win: to gain the victory; overcome an adversary
why do we have to win?
when you really understand this question you will realise that our own human conditioning is the reason we like winning and dislike losing, we are trained into thinking that its better to win than lose.
How can the USA win this war?
what is war?
War: a conflict carried on by force of arms, as between nations or between parties within a nation; warfare, as by land, sea, or air.
so what is conflict?
Conflict: to come into collision or disagreement.
why do we disagree?
we disagree because we are selfish to our own thoughts. therefore, our own thoughts breed conflict.
so the only way to "win" in a sense is to bring about a new way of thinking in all humans, which is not poisoned by propaganda, religion, politics, institutions, and opinion.