Hello everyone and welcome to Ammanpur. Here's what's coming up.

If negotiations are to occur, it is wrong and foolish to predetermine their outcome.

High stakes diplomacy in Geneva, as talks between the U.S. and Iran resume and tensions grow over the American buildup

in the region. I speak to Wendy Sherman, former U.S. Deputy Secretary of State, who helped

negotiate the 2015 nuclear deal. Then we have to be an independent Europe.

Europe hasn't done enough in its own defense and security for many years.

A transatlantic turning point.

At the Munich Security Conference, European leaders signaling a new strategy.

Christian's conversation with European Commission President Ursula von der Leyen and British

Prime Minister Kier Starrmer on security, Ukraine,

and whether Europe is ready to stand on its own. Also ahead. What happens in our part of the world,

in the U.S. affects Antarctica, and Antarctica affects us. From the edge of Antarctica,

scientist David Holland joins Hari Srinivasan from a research ship

studying rapidly melting glaciers and what their collapse could mean for global sea levels. Welcome to the program, everyone. I'm Biana Giladriga, New York, sitting in for Christiana Ammanpur.

It's a day of dual diplomacy in the Geneva area,

as President Trump's special envoy Steve Whitkoff and his son-in-law, Jared Kushner, attempt to

negotiate with Iran to avert a wider war. Also on the agenda, attempting to end Russia's war on Ukraine

as it approaches its fifth year. Iran's foreign minister describes the talks as serious and positive

as it seeks an end to sanctions that have crippled its economy.

We were able to reach a general agreement on a series of guiding principles. We will move

based on those principles and enter into the text of a possible agreement.

The United States says progress was made, but details need to be discussed and that Iran will

...