Quote Originally Posted by ToTaL ITK View Post
"But despite the fall of Baghuz, IS is by no means defeated. US officials believe IS may have 15,000 to 20,000 armed adherents active in the region, many of them in sleeper cells, and that it will return to its insurgent roots while attempting to rebuild"

so not defeated then
All countries have sleeper cells in case of invasion. There were a few infamous ones operating in mainland Europe.