Obama has pretty much ignored terrorism except for approving the UBL mission, note I said mission which was supposed to "catch" him not kill him.
He only approved that mission since most of the US public wanted UBL, but Obama realizes most people don't have a clue about ISIS, Boko Haram, etc so he plays along ignoring the threat while gutting the military and funneling that money to welfare projects.
I don't think he ignored it, he supported it. This is all part of Hilary and Obama's "Arab Spring".