I can't tell you if the use of force in Iraq today will last five days, five weeks or five months, but it won't last any longer than that.
And it is not knowable if force will be used, but if it is to be used, it is not knowable how long that conflict would last. It could last, you know, six days, six weeks. I doubt six months.
Don't be a bottleneck. If a matter is not a decision for the President or you, delegate it. Force responsibility down and out. Find problem areas, add structure and delegate. The pressure is to do the reverse. Resist it.