In fairness to VDH, that was written pre-9/11. Do you think Afghanistan and Iraq would have been liberated by now if it had not been for 9/11?
Well, this is sort of the point. As brilliant as VDH is, even he didn't foresee that there will ALWAYS be new threats that will cause western armies of liberation to undertake new crusades. The very fact that he didn't envision such an instance in fact proves his overall thesis---that the west is superior and that it always will defeat such tests.