Go big was always the only decisive answer, but GW wasn't looking down stream when he came up with this boneheaded war... Thats why Colin Powell left.
The Powell doctrine is that you commit absolutely. If you let the political machine run the war then you get Vietnam. And thats whats happening now.
GW was short-sighted and figured when Baghdad fell, Thomas Jefferson or someone was going to show up and run Iraq, it was naive and foolish.
Had there been a true plan for a post-Saddam Iraq when we started, we would have had to commit twice the troops we did. And we would have been done 2 years ago... But instead we have a piece-meal force moving from one hot-spot to the next and losing everything we gained each time we move. Its retarded, like the administration that dreamed it up.
Today, Iraq has lasted longer than the U.S. involvement in WWII! And its all because of a short-sighted battle plan that assumed everything would turn to gold when Saddam fell.