They are working for Bush and Pentagon. They are not authorized to tell the truth. Remember how Bush went from "We are winning and Rumsfeld is great" before elections to "We are not winning and Rumsfeld will resign" after elections in a matter of a few weeks?
Truth is hard to come by these days when it comes to American military and the White House.
They were ordered to hold off for another 1.5 years until after 08 Presidential elections. That is their mission.