joo author sylvia dukes morris is our guest on this week's "q and a." >> she was so beautiful and smart and which they that she became -- witty, she was so irresifsable to men. even in old age i gave her 80th birthday part party and richard cohen the washington columnist was at the party and they sat together after dinner having coffee and at one point she begins to stroke his beard and afterwards he said, heavens, i've never met an 18-year-old before that i wanted to leap into bed with. she had this seductive quality her entire life. >> sylvia dukes morris on the life and career of claire booth luke and sharing about their personal relationship during her final years. that's sunday night at 8:00 pacific. >>> the lead u.s. negotiator with the iran wendy sherman testified before the senate foreign relation's committee on tuesday. a july 20th deadline to reach a deal was recently extended by four months. the hearing includes a treasury department update on the ongoing sanctions against iran plus the views of former obama and george w. bush administration advisers. this is just over 2 hour