Quote: Yet we still don't know how big it is," "We still, today, don't know al-Qaida's order of battle."
I think that is largely false. Whe have a significant portions of the leadership in custody, and It seems highly unlikely that all of them are stone-walling. Given the general level of cowardice exhibited by these so called "masterminds" and the fact that they have been kept out of range of the US courts and in undisclosed locations in countries where torture and drug use are allowed, I suspect they are singing like birds.
I do agree with much of the article which suggests that the battle will be moved to Europe where they have a much better chance of success.
US muslims, by and large chose to remain silent, neither condemming nor overtly supporting al-Qaida.
I don't think the same will be true in Europe, where half of Paris is Muslim and becoming quite radicalized.
Old Europe's 9/11 is yet to come.