Are you being sarcastic? I assume so since 19 out of 20 came from Saudi Arabia.
Come on, 9/11 bombers could not be our allies! They must have come from the axis of evil - Iran, Syria, Iraq and North Korea. There is plenty of evidence - secret metting in Prague/Bohemia and key terrorist having his leg amputated in Baghdad hospital.
Nonsense. We would have attacked Saudi Arabia if that were true. Obviously, it was the Iraqis who did this.
Since Osama's primary enemy is the Saudi royal family it may safely be presumed he thought the United States would be distracted by this fact (19 out of 20) and attack Saudi thereby accomplishing part of his ultimate ambition.
Which leads me to a question? Who do you work for?