Now, when Little Condi Rice says that she doesn't know how "we could have done more" to stop the World Trade Center incident, what she's really saying is that the administration is incompetant.
If you are not able to look at a failure of any scale, recognize it as a failure, and explain to other why it happened, and how you can prevent it in the future, you have demonstrated a failure in basic life skills.
If the administration had really done everything possible to prevent it, then it _wouldn't have happened_. This isn't an opening for a philosophical debate. There's no action that can't be prevented- at least in hindsight. This administration has apparently plucked out the hind-sight eyes, and is incapable of examining their own fuck ups.
Let me say this one last time: when confronted with a failure that you are responsible for, it is your responsibility to examine that failure, and find out how, and why it happened, and take measures to see that it _doesn't happen again_.