During the eight years of Clinton, liberals slept easy knowing that their president would maintain their fictions, such as the US being on board with the international BS like Kyoto and ICC. They thought that the mandateless W would be obligated to continue those fictions, i.e. "long-established doctrine."
But it had required amazingly disciplined cowardice on the part of Clinton, in the face of terrorist attacks during his tenure, to completely avoid betraying the liberals trust. So that was a bit of a house of cards.
That the country as a whole approved of Clinton job performance further lulled the liberals to blissful sleep. The American people had been pleased that things seemed to be going so well, but they never bought the lying doctrine. With Rush, Drudge, 9/11 fallout, FoxNews, FR on their side, and the bully pulpit, W and Rove were able to have the political cover to jettison all that BS effectively.
The liberals are very angry to be jarred out of such a pleasant sleep.