A Theory For Why We Haven't Been Attacked Again Since 9/11

I don't think this is the complete answer, but it is a good rejoinder to conservatives on this issue that is not too conpsiracy-ish.

Kristin Breitweiser:

Finally Karl, please “understand” that the reason we have not suffered a repeat attack on our homeland is because Bin Laden no longer needs to attack us. Those of us with a pure and comprehensive “understanding of 9/11” know that Bin Laden committed the 9/11 attacks so he could increase recruitment for al Qaeda and increase worldwide hatred of America. That didn't happen. Because after 9/11, the world united with Americans and al Qaeda's recruitment levels never increased.

It was only after your invasion of Iraq, that Bin Laden's goals were met. Because of your war in Iraq two things happened that helped Bin Laden and the terrorists: al Qaeda recruitment soared and the United States is now alienated from and hated by the rest of the world. In effect, what Bin Laden could not achieve by murdering my husband and 3,000 others on 9/11, you handed to him on a silver platter with your invasion of Iraq - a country that had nothing to do with 9/11.