Will Nancy Pelosi Continue to Lead the Democrats?

Babak Namazi, brother of freed prisoner Siamak Namazi discusses his brother's homecoming. Qatari Prime Minister Al-Thani on the deal his country brokered between the US and Iran. Al Gore speaks about the global status of climate change. Singaporean foreign minister Vivian Balakrishnan talks about China's growing influence. Billie Jean King on 50 years since winning the Battle of the Sexes.

At the United Nations General Assembly, more than 100 world leaders are gathering to discuss pressing world issues, from climate to grinding poverty. Irish prime minister Leo Varadkar, Australian foreign minister Penny Wong and NATO Secretary-General Jens Stoltenberg join the show. Diana B. Henriques on her new book, "Taming the Street."

US national security spokesperson John Kirby discusses the five Americans released from Iran. Jared Genser, attorney for one of the Americans released, dives further into the story. As leaders gather for the UN General Assembly, UN Secretary-general António Guterres talks about the geopolitical crises at hand. HIV scholar Steven Thrasher on what the end of PEPFAR would mean for global AIDS relief.