Choose your battlefields
Here’s a thought: we continually hear that we must stay in Iraq in order to wage the War on Terror, and that al-Qaeda in Iraq has materialized as a deadly foe. Hence retreating from Iraq would be synonymous with being handed a major defeat by al-Qaeda.
But since when do astute wagers of war allow the enemy to dictate the terms of battle? Sure, perhaps al-Qaeda would like to use Iraq as a battleground against the United States. But why should the United States want to use Iraq as a battleground against al-Qaeda? It hardly seems obvious that just because it makes sense for your enemy to favor a particular location for use as a battlefield it likewise makes sense for you.
America clearly has good reasons for wanting to fight the enemy called al-Qaeda. But likewise there pretty clearly exist some major disadvantages for America in wanting to do that fighting in the country known as Iraq