He is what I call an evil genius. Genius can be used for good but unfortunately it can also be used for incredible evil.

Osama knew exactly what he was doing and he knew that a fire bomb would melt the steel.

No, Osama is the most evil person to inhabit the earth since Hitler and he has similar dreams of mass murder. The only reason his plan failed was that the last plane failed to crash into the White House. If that had happened, the U.S. might have retaliated just as he planned. Apparently a loving God intervened and saved America from even more brutal murders.