Many politicians and pundits in Washington have ignored perhaps the most important point made by Gen. David Petraeus in his recent congressional testimony: The defeat of al Qaeda in Iraq requires a combination of conventional forces, special forces and local forces. This realization has profound implications not only for American strategy in Iraq, but also for the future of the war on terror. As Gen. Petraeus made clear, the adoption of a true counterinsurgency strategy in Iraq in January 2007 has led to unprecedented progress in the struggle against al Qaeda in Iraq, by protecting Sunni Arabs who reject the...