Is U.S. coalition winning war vs. ISIS?

Updated 5:48 PM EST, Tue February 3, 2015

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Bergen: Five months after Obama pledged to destroy ISIS, it still controls large territory and attracts support.

He says Chuck Hagel may be right, that U.S. military may need to be near front lines

Editor’s Note: Peter Bergen is CNN’s national security analyst, a director at the New America Foundation and the author of “Manhunt: The Ten-Year Search for bin Laden – From 9/11 to Abbottabad.” Emily Schneider is a research associate at the New America Foundation. This is an updated version of a piece published Sunday.

(CNN) —