This speech, one of the longest and most detailed of his presidency, is so rich and nuanced that it can't be done justice in this space. Do yourself a favor and go to whitehouse.gov and read the whole thing.
It is the signal rhetorical accomplishment of his second term, and unmistakable evidence that despite its recent political troubles, the Bush administration remains steadfast and implacable on the need to secure victory in Iraq for the sake of the security of the United States and the West.
When the conference is over, I'll provide an outline and some key quotes. I strongly encourage you to read it.