With regards to 9/11, Bush chose Rice as his NSA in part because she was an recognized expert on terrorism. She gave speeches on the threat of Islamic terrorism and I believe Bush even made it a campaign issue in 2000. During her first few months on the job she wrote a plan to go after Al Qaeda which was on President Bush's desk on 9/10/01 for his review.
Then, read Cheney's book. Towards the end he tells about Rice and the fumbling of the N Korea proliferation troubles. Lot's of people are considered experts, without actually being one. Rice is an academic, her real world track record isn't so great.