And I suppose if we devoted a few hundred $billion to the problem, invade and occupy the area for a decade or so, we could eradicate "ISIS," but I don't think the problem is that simple. For example, I don't think our inability to eradicate radical Islam from the face of the earth is due to a lack of will or resources, etc.
Not comparing them in ANY way - just an example - but let's pretend the Chinese wanted to eradicate militia types in the U.S. I'm sure they could eradicate known militias with enough effort and with proper disregard of civilian casualties, but we've got 300 million people, 10s of millions at least armed and some millions of those willing to fight an enemy like China, and watching them round up and kill 10,000 Americans would just motivate some large number of those to take their place. I don't see any difference with our efforts against "ISIS" or "AQ" in that region. Not unless you're willing to do the "Stalin purge" kind of thing, which we're not going to do.