Two points of military theory are important here. First, a higher level dominates a lower. If you win on the tactical level but lose operationally, you lose. If you win on the tactical and operational levels but lose strategically – Germany's fate in both world wars—you still lose.
Second, in most wars, including Fourth Generation wars, success on higher levels is not merely additive. That is to say, you cannot win operationally or strategically just by adding up tactical victories. We tried to do that in Vietnam, and the Second Generation U.S. military still does not understand why it didn't work. In Second Generation theory, it is supposed to work, which is why we are trying it again in Iraq and Afghanistan, and again not understanding why we are losing.
If we consider the operational and strategic situations in Iraq, we can easily see why no amount of tactical success can save us. Strategically, we are fighting to support a Shiite regime closely aligned with Iran, our most potent local opponent. Every tactical success merely moves us closer to giving Iran a new ally in the form of a restored Iraqi state under Shiite domination. The more tactical successes we win, the worse our strategic situation gets. This flows not from any tactical failure (though there have been plenty of those), but from botching the strategic level from the outset. Saddam's Iraq was the main regional counterweight to Iran, which means we should not have attacked it.
http://www.d-n-i.net/index.htmlThe surge is BS to delay withdrawal until the next Dem/Pub president can "take the blame for losing the war".