Iranian ambassador on revenge for Soleimani's death

The Friday killing of Iran’s best-known military commander in a U.S. airstrike prompted an outpouring of grief in Tehran -- along with vows of vengeance. In the aftermath of Qassem Soleimani’s death, the country’s leaders and President Trump exchanged threats about what might come next. To share Iran’s perspective, Iranian Ambassador to the United Nations Majid Takht-Ravanchi joins Judy Woodruff.