It is not odd that Bin Laden is on the FBI's most wanted list for terrorist attacks but there is no mention of him killing over 3000 people in the 9/11 attacks?
www.fbi.gov/wanted/wanted_terrorists/usama-bin-laden
That's because he wasn't the master mind behind the 9/11 attacks. It was Khalid Shaikh Mohammed. Mohammed was a senior member of al-Qaeda headed by bin Laden. al Queda, at the time of 9/11 was based in Afghanistan.
Since the Islamic fundamentalist, and bin Laden himself, have openly declared war on the US; are responsible for the vast majority of terrorism throughout the world; had already tired to bring down the World Trade Center in 1993 by Ramzi Yousef, the nephew of Khalid Mohammed; openly claimed and took credit for the 9/11 attacks; why would it be a stretch to believe that al Qaeda and the Islamic fundamentalist were behind the attacks.
We did not need 9/11, nor did we, to go to war with Iraq. And we did not go there to steal their oil though I wish we did take a cut.