I think the coalition would be able to make a substantial difference in being able to reduce ISIS's ability to access its local funding if it had a larger presence in Iraq and Syria. That said, I'm not here to advocate for any particular policy as much as to analyze different policy options. I think the best option on the table right now that's also realistic, given national politics in most coalition countries, is kind of a strategy of patience and working through local partners in Iraq and, ideally, in Syria as well, which, I think, the key is capacity building, and this requires kind of small footprints, small deployments of troops, to service trainers and advisors rather than large deployments of combat forces.
