Obama knew damn well that ISIS was growing and on the march.. He helped create them!!!
Perhaps he did underestimate them.
They haven’t completely taken over yet...
"...Obama held up Yemen and Somalia as examples of how his strategy works. He must believe we are uninformed, unread, and plain stupid. Both Yemen and Somalia are the kind of terrorist safe havens (as is Libya) that Obama promised to refuse ISIS...."
http://spectator.org/articles/60404/while-benghazi-still-smolders-isis-burns-bright