I declared myself happy in principle with the notion of overthrowing Saddam Hussein, just as I was happy to see the Taliban chased from power. But I wanted everyone to understand that military action, by itself, could never defeat an ideology like radical Islamism — could never contribute more than 10 percent (I invented this statistic, as an illustrative figure) to a larger solution. I hammered away on that point in the days before the war. And today I have to acknowledge that, for all my hammering, radical Islamism, in several of its resilient branches, the ultra-radical and the beyond-ultra-radical, has proved to be stronger even than I suggested.
http://www.nytimes.com/2008/03/23/opinion/23berman.html?ex=1206936000&en=5725721c634b4060&ei=5070&emc=eta1