Who's fault was 9/11? Will a second one be coming soon?

Question

http://www.youtube.com/watch?v=8sj91NH5fvw&feature=related

Answer 1

The persons who planned and plotted and executed the plan, in violation of many US and International laws are at fault - anything else is bull---! The perpetrators are at fault - they broke the laws and committed large scale murder and violence and vandalism, nobody else. Most religions, including Islam, condemn their souls for eternity, as do secular law. If it is attempted again, in any form, I hope the response will be that of the brave passengers who took the criminals down with them, but without any further damage beyond that airplane, at a maximum. At an minimum, I hope they are caught and punished and imprisoned for the remainders of their worthless lives.

Answer 2

It was Al Qaeda's fault.

Answer 3

wtf terrorist you dimwit and it won't happen again

Answer 4

The US asked for it.  They knew it was coming and did diddly squat about it.. They have stuck there noses into everything. Sooner or later a country or lone man will retaliate.