Daniel Pipes suggests a completely different approach in Iraq, which would remove American troops from immediate harm in urban areas (there’s you’re withdrawal bit), while enabling them to continue to perform tasks vitally necessary to the delicate new Iraqi nation:
“Stay the course – but change the course.” I suggest pulling coalition forces out of the inhabited areas of Iraq and redeploying them to the desert.
This way, the troops remain indefinitely in Iraq, but remote from the urban carnage. It permits the American-led troops to carry out essential tasks (protecting borders, keeping the oil and gas flowing, ensuring that no Saddam-like monster takes power) while ending their non-essential work (maintaining street-level order, guarding their own barracks).
He explains more about his idea’s benefits here. It’s certainly intriguing.