Why the U.S. Might Need Boots on the Ground in Iraq

In the Washington Post, AHS speaker Michael O'Hanlon explains why the U.S. might need boots on the ground in Iraq:

"At present, an Iraqi national guard does not even exist, yet it will be a linchpin of the new strategy. To succeed, U.S. advisers will probably have to help these new national guard units, as well as reconstituted regular army units, far beyond calling in airstrikes."