Because rove leaked this story so that the Kerry campaign would run with it and then we could say " we will investigate" and our investigation found that we destroyed the weapons april 13th.... and by the way this information was covered in one of the 75% INTELLEGENCE BRIEFINGS THAT MY OPPONENT MISSED!.
Its called balls of steel and the long game.
Pent spokesman: heavy movement from facility of RDX explosives during period when ONLY Saddam was in charge...