I can't tell you if the use of force in Iraq today would last five days, or five weeks, or five months, but it certainly isn't going to last any longer than that.

The absence of evidence is not necessarily the evidence of absence.

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,…

Now what is the message there? The message is that there are known 'knowns.' There are things we know that we know. There are known unknowns. That is to say th…