Luttwak is always worth reading, especially when you disagree with him. I haven't completely digested everything he says in the article, but here is a telling quote:" The armed forces of the most advanced countries, and certainly of the United States, all formidable against enemies assembled in conveniently targetable massed formations, are least effective in fighting insurgents. That was demonstrated in Vietnam in many different ways over many years..." If you want to know how the war looks to one of the (rare) intelligent members of Lower Manhattan's elite, this is a good read.

One further comment. He makes it clear that he sees strong parallels between the current war in Iraq and the 19th century Spanish guerrilla war against France. I agree that there are strong similarities, and possibly stronger than even he suggests. But his implied argument, that similarity of circumstances results in similarity of outcomes, seems weak.