War IS terrorism

This morning, Frank Ford sent me a Boston Globe opinion piece by Howard Zinn. It's entitled "War is not a solution for terrorism" and here is part of what it says:

Beyond the futility of armed force, and ultimately more important, is the fact that war in our time inevitably results in the indiscriminate killing of large numbers of people. To put it more bluntly, war is terrorism. That is why a "war on terrorism" is a contradiction in terms. Wars waged by nations, whether by the United States or Israel, are a hundred times more deadly for innocent people than the attacks by terrorists, vicious as they are.

The repeated excuse, given by both Pentagon spokespersons and Israeli officials, for dropping bombs where ordinary people live is that terrorists hide among civilians. Therefore the killing of innocent people (in Iraq, in Lebanon) is called accidental, whereas the deaths caused by terrorists (on 9/11, by Hezbollah rockets) are deliberate.

This is a false distinction, quickly refuted with a bit of thought. If a bomb is deliberately dropped on a house or a vehicle on the grounds that a "suspected terrorist" is inside (note the frequent use of the word suspected as evidence of the uncertainty surrounding targets), the resulting deaths of women and children may not be intentional. But neither are they accidental. The proper description is "inevitable."

So if an action will inevitably kill innocent people, it is as immoral as a deliberate attack on civilians. And when you consider that the number of innocent people dying inevitably in "accidental" events has been far, far greater than all the deaths deliberately caused by terrorists, one must reject war as a solution for terrorism.

Simple. Obvious. Why, then, is this observation by Zinn almost universally rejected or ignored?