My advice is for you to just poke out, because records show that every war or skirmish we get into always and I mean always ends up worse than it was before we went in.
Relatively speaking it’s ancient? And if you think ISIS is wiped out, you’re in for a nasty shock, because IS is in every country on the planet, including yours. They’re just waiting for the right time to get started on us. The trouble is that as they don’t wear uniforms, it kinda makes them invisible, and it isn’t easy to win against an enemy you can’t see. We should have taken them on years ago - about the time that Assad and the Russkies went after them; that would have prevented their migration.
I have no view on the tactics or strategy, the timing is the important thing here. Had it not been for Assad and Putin getting stuck in 10 years ago, radical Islam’s global jihad would be well under way right now.
Neither Assad nor Putin has had any significant effect on the global Jihad, the US and UK have been the primary actors working to interdict the jihadis globally for three decades.