"The U.S. military launched an investigation Wednesday into the cause of a devastating blast in a mess tent at a base in northern Iraq that killed 22 people and injured 72 in one of the deadliest attacks on American troops since the start of the war." Source
Cause 1: Bush and Rumsfeld left munitions sites unguarded, so the insurgents could get their hands on a few real weapons.
Cause 2: Bush and Rumsfeld are running a war on the cheap, and haven't adequately armored the facilities in a war zone.
They gave them weapons, and didn't give US armor.
Now they're investigating the cause.
How bad do things have to get before for them to stop insisting that things are getting better?