Not as an occupying force, no. More troops do need to be sent for a wider advising role, as well as a larger supportive role. We desperately need to send Joint terminal attack controllers (JTAC's) to be embedded with Iraqi Security Forces (ISF). One reason why there are so few airstrikes in Iraq is because of a lack of current intelligence on targets. JTACs would cut down on that. More offensive Special Operations Forces need to be sent too in order to conduct more offensive operations against IS leadership or other HVT's. But as an analyst, I (and DB5 for that matter) can tell you that no progress will be made unless the ISF can actually retake and hold onto retaken ground. This is the real test.