Obama's Letter to Congress on the Syria Airstrikes Has a Glaring Omission

See if you can spot it.

He never mentions the Islamic State, ISIS, ISIL…at all.

Is this letter an admission that he has yet to find legal justification to back up the airstrikes on ISIS targets? Or is this letter depending on the Authorization for Use of Military Force — which he wanted to repeal — to strike Khorasan, which is a more direct offshoot of al Qaeda than ISIS is?

h/t Weasel Zippers