ISIS/ISIL controls a major part of Iraq, are heavily involved in the continued attempts to topple Syria, and by all appearances seem to be preparing for a foray into Jordan, and you consider them to be a 'fringe' group? No wonder you don't seem to understand why we ridicule the president for referring to them as 'JV'.
Nobody wants to get involved in another protracted military engagement over there, but these people have a stated goal to raise the black ISIS flag over the White House. Granted, the chances of that are nil, but what is obvious is the effect that our absence in the region has had - as soon as we left, ISIS began to fill the void. How far would you let them go? Would you allow them to attack Saudi Arabia? Would you wait until they managed to blow up a high profile target on American soil? What about the Iraqi people suffering under their extreme laws only because we were in such a hurry to get out of there? What does it take, in your opinion, to give an American president a clear conscience to engage ISIS militarily?
Or would you write it all off as nothing new? After all, gruesome things like this have been happening over there for millennia, right?