20 July Washington Post commentary - The 20 Percent Solution by Charles Krauthammer.

Amid the Senate's all-night pillow fight and other Iraq grandstanding, real things are happening on the ground in Iraq. They consist of more than just a surge of U.S. troop levels. Gen. David Petraeus and Ambassador Ryan Crocker have engaged us in a far-reaching and fundamental political shift. Call it the 20 percent solution.

Ever since the December 2005 Iraqi elections, the United States has been waiting for the central government in Baghdad to pass grand national accords on oil, federalism and de-Baathification to unify and pacify the country. The Maliki government has proved too sectarian, too weak and perhaps too disposed to Iranian interests to rise to the task...

... Petraeus and Crocker have found a Plan B: pacify the country region by region, principally by getting Sunnis to join the fight against al-Qaeda...