George Will is on a roll.

Despite his intense desire to have Obama lose in 2012, George Will still has tough questions for those in the GOP field who seem to favor perpetual war:

Most of the candidates have disparaged Barack Obama’s decision that all U.S. troops will leave Iraq this year. (Ron Paul considers the withdrawal of U.S. assets insufficiently thorough; but, then, he might favor U.S. withdrawal from territories of the constitutionally dubious Louisiana Purchase.) What is the candidates’ objection to Obama implementing the status-of-forces agreement that his predecessor signed in 2008?

The candidates should answer three questions: How many troops would they leave in Iraq? For how long? And for what purpose? If eight years, 4,485 lives and $800 billion are not enough, how many more of each are they prepared to invest there? And spare us the conventional dodge about “listening to” the “commanders in the field.” Each candidate is aspiring to be commander in chief in a nation in which civilians set policy for officers to execute.

The foreign policy statements of the GOP candidates have been embarrassing. I doubt any of them can answer this question coherently.