Will the US still be paying the Sunnis?

McClatchy has a really good article on the tensions between the Shia government and the Sunnis.

A key pillar of the U.S. strategy to pacify Iraq is in danger of collapsing because the Iraqi government is failing to absorb tens of thousands of former Sunni Muslim insurgents who'd joined U.S.-allied militia groups into the country's security forces....

Also: (AP) "Top Sunnis accuse Shiite-led Iraqi troops of carrying out political arrests"