I don't know who is right but for Pelosi, a veteran politician, to say that the CIA "lied" is big. Politicians who get to this level generally do not make eronious statements. They are always calculating for a goal they have in mind. The only goal this brings about is an investigation and she called for one.
The problem is that Obama has already said he doesn't support this. So what is she doing? Is she defending herself and her word by calling the CIA liars or does she really want a truth commission. Who knows.
The Post has an article on the subject:
"Pelosi's performance in the Capitol was either a calculated escalation of a long-running feud with the Bush administration or a reckless act by a politician whose word had been called into question. Perhaps it was both."
There is another question. Why is the GOP attacking her? The GOP is viciously attacking Pelosi only increasing the call for a truth commission. The last thing the GOP needs is a commission investigating the Bush's toture policy and who was complicit.
Overall, this is all very confusing.