Many experts warn that ISIS propaganda videos are intended to suck the US into a war that would [ legitimize ISIS among Sunnis and thus strengthen it ]( https://firstlook.org/theintercept/?p=5015 ) . US hawks that call for immediate war are motivated by domestic politics. If as a byproduct of political gain they strengthen ISIS, that's not important to them.
Ссылка: https://stallman.org/archives/2014-jul-oct.html#18_September_2014_%28Sucking_the_US_into_war%29