Iran and the World

President Obama, before the United Nations General Assembly and the world today, talking about the world’s challenges and how the United States cannot solve them alone.
In the middle of those challenges — and very soon at the center of six-party talks including the United States and, for the first time, the Obama administration — Iran and its nuclear program.
Can the Obama White House succeed where others have failed in rallying the world to cut Iran off from the path to nuclear weapons?
This hour, On Point: On and offstage at the UN — diplomacy, threats, and tackling the challenge of Iran.
You can join the conversation. Tell us what you think — here on this page, on Twitter, and on Facebook.Guests:

Joining us in our studio is David Sanger, chief Washington correspondent for The New York Times and author of "The Inheritance: The World Obama Confronts and the Challenges to American Power."  You can read an excerpt here.

From New York, we're joined by Gary Sick, senior scholar and professor of Middle East Politics at Columbia University. He served on the National Security Council under Presidents Ford, Carter and Reagan and was principal White House aide for Iran during the Iranian Revolution and the hostage crisis. He's author of “All Fall Down: America's Tragic Encounter With Iran" and “October Surprise: America's Hostages in Iran and the Election of Ronald Reagan." He blogs at Gary's Choices.

And from Berlin, we're joined by Constanze Stelzenmuller, senior transatlantic fellow at the German Marshall Fund of the United States. She is former defense and international security editor at the German weekly Die Zeit.