Warden apparently thinks,

Warden championed and perfected the concept of approaching “the enemy as a system.” Rather than throwing armies against armies and air forces against air forces, Warden’s strategies involve analyzing an enemy’s military forces as parts of a much larger whole. In the Persian Gulf Air Campaign, Warden dismantled the enemy’s ability to function. You can incapacitate the functioning of your opponent from a system standpoint
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We have tried this for decades and not once was it successful. It sure as hell didn't defeat Iraq during DESERT STORM, but relentless targeting of their fielded forces, along with a decisive ground assault did. Targeting the C2 and other systems were supporting efforts, and the overall impact of that that targeting is not possible to assess. The results of the highway of death, the ground campaign, all combined with a PSYOP effort resulted in mass capitulation.

That was a conventional fight, and even then a systems approach had questionable effect. The insurgency is not a systems of systems that conforms to linear thinking, it is composed of a think and adapting adversary who has dealt with our air power previously. This approach is simply an attempt to script write, much like the flawed EBO concept, where if we do X, then Y will happen.

On the other hand, can airpower disrupt, maybe even halt ISIS in their tracks? It certainty can if we have the intelligence to effectively direct it. Ultimately if the Iraqi government wants to win they certainly need to take and hold their sovereign territory, that isn't conventional, it is simply common sense. They are a legitimate state if they can't control their territory, and if ISIS is controlling it then they're winning. I think ISIS could handle getting pushed back a little by a combination of air and ground forces. Unless they're stupid they'll adapt a Fabian strategy and avoid a decisive battles and wage a war of attrition, I think we been down this road before. If we expect too much from air power, like winning, we'll once again be very disappointed. On the other hand, we should use our air power to the extent possible to disrupt and degrade ISIS. A win by ISIS is not in our interest.