Ambassador Wendy Sherman admits she “lost it,” and broke down in “tears of anger and frustration” as lead negotiator for the Iran Nuclear Deal. But she persevered, and the deal got done. Now, the U.S. has pulled out. She talks about what that means and how women need to “reinforce each other” in a man’s world. Her new book is called, “Not for the Faint of Heart; Lessons in Courage, Power and Persistence.”