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High risk of missteps with Iran
Tensions between the U.S. and Iran continue to escalate after Tehran shot down an American drone flying over the Persian Gulf. Peter Wehner, who served under three Republican administrations and is the author of "The Death of Politics: How to Heal Our Fractured Republic After Trump," talks with Ali Velshi about why the danger of missteps and miscalculations is far greater under the Trump presidency than under past administrations.