From the Oval Office, U.S. President Barack Obama speaks on the phone with Iranian President Hassan Rouhani on Sept. 27, 2013.

CBS News – President Obama acknowledged that the U.S. underestimated the rise of the Islamic State of Iraq and Syria (ISIS, also called ISIL) and overestimated the ability of the Iraqi military to fend off the militant group in an interview that will air Sunday on 60 Minutes.

The president was asked by 60 Minutes correspondent Steve Kroft about comments from Director of National Intelligence James Clapper, who has said the U.S. not only underestimated ISIS, it also overestimated the ability and will of the Iraqi military to fight the extremist group.

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