Whatever the source of the intelligence, the attack appears not to have been successful in its aim to decapitate the leadership. Now it is back to the original plan, which will take longer. The Pentagon civilian planners believe that a concentration of devastating air attacks will be needed to demoralise the Iraqi military, and that they will then rush to surrender. Others, mainly in the military, worry that it takes time, as well as overwhelming force, to grind down an enemy's morale.