Let's not take the subtle stuff. Let's take his ability to carry through on what he says. If you will recall (google if you missed the news) George Bush addressing the nation and said:
"No matter what the whip count is, we're calling for the vote. We want to see people stand up and say what their opinion is about Saddam Hussein and the utility of the United Nations Security Council."

He lied. We didn't call that vote. The entire world got to see our President stand up, make specific declarations of what we would and would not do. Later we got to see the value of his word. (Of course those of us who compared declarations on when he stopped drinking with video from years after that of him blasted already knew that he thinks that truth is for others.)

Cheers,
Ben