6 Dec. New York Times op-ed by Wesley Clark - The Next Iraq Offensive.

... While American troops have been fighting, and dying, against the Sunni rebels and foreign jihadists, the Shiite clerics in Iraq have achieved fundamental political goals...

We need to keep our troops in Iraq, but we need to modify the strategy far more drastically...

On the military side, American and Iraqi forces must take greater control of the country's borders, not only on the Syrian side but also in the east, on the Iranian side. The current strategy of clearing areas near Syria of insurgents and then posting Iraqi troops, backed up by mobile American units, has had success. But it needs to be expanded, especially in the heavily Shiite regions in the southeast, where there has been continuing cross-border traffic from Iran and where the loyalties of the Iraqi troops will be especially tested.

We need to deploy three or four American brigades, some 20,000 troops, with adequate aerial reconnaissance, to provide training, supervision and backup along Iraq's several thousand miles of vulnerable border. And even then, the borders won't be "sealed"; they'll just be more challenging to penetrate...