Exploring the Impact of U.S. Leadership on European Security

What’s to stop Russia from escalating the conflict? Who is Steve Witkoff? Can Trump stop Ukraine from joining Nato?

These are some of the questions you’ve been sending in - and today, Lyse, Vitaly and Matthew Savill from the Royal United Services Institute think tank, joined presenter Christian Fraser to answer them on the BBC News channel.

The producers were Ben Carter and Ryan Johnston. The series producer is Tim Walklate.

Email Ukrainecast@bbc.co.uk with your questions and comments. You can also send us a message or voice note via WhatsApp, Signal or Telegram to +44 330 1239480

You can join the Ukrainecast discussion on Newscast’s Discord server here: tinyurl.com/ukrainecastdiscord