(CNN) - A good soldier never publicly contradicts the commander in chief, at least not intentionally, and Defense Secretary Chuck Hagel is a good soldier.

A Vietnam War veteran, Hagel provided a robust defense of President Barack Obama's approach to ISIS jihadists in Iraq and Syria when interviewed Wednesday by CNN National Security Correspondent Jim Sciutto.

With Obama facing criticism over what even a fellow Democrat called too much caution, Hagel sought to make clear that the President wants to eliminate any ISIS threat to the United States and its interests - both abroad and at home.

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