Maybe it's just me, but I didn't read this article and take from it a negative or anti-American tone. It's more like 'America is severely pissed off and they're united behind the idea of fighting a war and fighting it to win.'
For instance, this quote: "Europeans should reflect on this as a measure of the hard-eyed national commitment that differentiates the American mood from that of any other country. This, rather than the diplomatic niceties of coalition building, will mainly determine what happens next."
The thrust of the piece, as I see it, is that America is very much directing this war as it sees fit and other nations might just as well get used to the idea. The author may not like that, but he describes the situation pretty accurately. We'll say the right things with respect to issues like nation building and humanitarian concerns, but foremost in our minds is the severe ass-kicking of those that we feel deserve it most at the moment.
Here's another quote that sums that last bit up pretty well: "The president is mobilising an American national will such as we have not recently seen. During the cold war it was unquestioning, but static. During Vietnam, it disintegrated. Now the enemy, though invisible, is unmistakable, and the national stirring is deep against him. For the first time, the US was attacked: for the first time, the US doesn't mind if casualties are taken in the name of vengeance or self-protection. For the first time, therefore, public opinion is unambiguously ready to come in behind whatever intervention a president decides he must propose."
Can't say that I disagree...