Charles Krauthammer reacted on "Special Report" to a New York Times report that revealed the Pentagon's inspector general is investigating if military officials skewed intelligence assessments about the fight against ISIS to make them more optimistic.

Krauthammer said it's obvious that ISIS has been successful in Iraq despite the U.S.-led air campaign.

He noted that the terrorist group has taken the cities of Ramadi and Palmyra, with the Iraqi Army offering little resistance.

"You simply have to look at the map on the ground, and of course they have made progress," Krauthammer said. "I would say ISIS is obviously at least gaining somewhat."

He said that's the reality and the question now is why the intelligence assessments might have been skewed.

Watch more from the "Special Report" panel above.

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