What if Staff Sergeant Robert Bales, the soldier who confessed to killing sixteen Afghan civilians in their sleep, wasn't crazy?  I don't recall any of the soldiers who urinated on the dead body of an enemy soldier, or those who tossed Korans in the trash, or those who raped, sodomized and tortured prisoners at Abu Ghraib as being diagnosed with mental illness.  War is unpredictable.  It can even twist a normal human being into a robotic exterminator.  This is why sensible countries steer clear of fabricated conflicts.