Defense Secretary Ash Carter is in Iraq today and he announced the US will deploy 200 more troops, this time close to the front lines of the conflict with ISIS. The US military is also for the first time using Apache helicopters against the militant group in Iraq. Both actions are reportedly part of a build-up to help Iraq retake the city of Mosul. Eric Schmitt, senior writer covering terrorism and national security issues for the New York Times, joins us from Washington.
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