MIN READSep 23, 2014 | 12:56 GMT

Islamic State fighters collect the wreckage caused by a cruise missile that hit a communications tower in Raqqa, Syria early Sept. 23.

(STR/AFP/Getty Images)

Supported by an unprecedented number of Arab states, the U.S.-led airstrikes in Syria could set the conditions for the downfall of the Islamic State, but will not achieve it alone....