Everyone is using term ISIS. The question is why Obama persists in using ISIL. He is odd man out. We know the answer - his failure in Iraq and Syria.
He has not yet failed in Iraq and Syria. ISIS is not yet defeated.
That could be it, but I think Obama says “ISIL” out of sheer arrogance. Saying ISIL instead of ISIS like everyone else makes him feel superior to his American subjects. This is just part of his ego-driven personality, such as when Obama insists on pronouncing Pakistan as “POKistan”.
Because he recognizes that the maniacs have what they perceive as claims on Jordan, Israel, Palestine and Lebanon. Sane people realize that even if such claims exist they have no validity whatsoever.
Their only valid claim to Syria and Iraq is that US policy created their existence and growth in those two countries. Is Obama implying he'd like to contribute to their growth in those other countries?
I would like to call ISIS disintegrated, but our disgusting government (and everyone elses) won't get together and kill the cancer instead of letting it spread.