Amb. Wendy Sherman: 'Not surprising' U.S. ends treaty with Iran

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Amb. Wendy Sherman, former Undersecretary of State for Political Affairs who helped negotiate the Iran Nuclear Deal, talks with Ali Velshi about the Trump administration’s decision to end the 1955 Treaty of Amity with Iran, and why this is consistent with the administration’s approach with not just Iran, but the governments of many other countries as well.