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On Wednesday’s Special Report, Charles Krauthammer said the Obama administration’s looming deal with Iran will be “infinitely more important” than the authorization for use of military force against the Islamic State.

“It’s going to be the most important event in the Obama presidency on the foreign front,” Krauthammer said. “To do it without consultation, input from Congress, and without its agreement, is a terrible mistake on the part of the administration.”

Krauthammer added that the United States will need to watch Iran very closely to ensure that Iran actually follows any binding arrangement, given their lack of respect for international law.