State media says Iran has seized a foreign oil tanker and its crew

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Iran's revolutionary guard is reportedly responsible for seizing a foreign tanker in the strait of Hormuz - according to Iran’s state TV. MSNBC global affairs contributor Wendy Sherman served as Undersecretary of State for Political Affairs during the Obama administration and is the author of "Not for the Faint of Heart: Lessons in Courage, Power and Persistence.” She joins Andrea Mitchell to discuss the latest on Iran.