A former deputy director of the CIA said on "CBS This Morning" Wednesday that it would take 100,000 ground troops to effectively respond to the Islamic State of Iraq and Syria, or ISIS.

"Unless the coalition is willing to put more ground troops into Iraq and possibly into Syria, there is very little we can do to respond," said CBS News senior security contributor Michael Morell, the former No. 2 at the CIA.

Morell made the comments following ISIS' release of a video Tuesday purportedly showing captive Jordanian pilot Lt. Muath Al-Kaseasbeh being burned to death. The killing led Jordanian officials to execute two Iraqi al Qaeda-linked prisoners.

Morell said the will to commit such a large number of troops "simply does not exist" in the U.S. or in Western Europe....