Many people have noted that ISIS is a product of the Administration's cupidity (or stupidity, as you will). It had its beginnings in the unwarranted attack against Libya, and was fed through the illegal shipments of arms from Libya and other sources to support it against the Assad regime in Syria. Depending on the author, Ambassador Stevens (who died at Benghazi) was either involved in trying to track advanced anti-aircraft missiles and other weapons finding their way to Islamic terrorists, or facilitating those transfers. SCG News has an article exploring this topic in more detail.
(H/t The Woodpile Report)