It's been almost four years since Russia's brutal full-scale invasion of Ukraine began. Now, Ukrainian negotiators are headed to Geneva to meet with Russia and the United States for the next round of talks, hoping to hammer out a ceasefire agreement. In Munich, Christiane sat down with Ukrainian President Volodymyr Zelensky, alongside NATO's Secretary General Mark Rutte, European Parliament President Roberta Metsola, and US Republican Senator Roger Wicker. 

Also on today's show: Jesús Armas, Freed Venezuelan opposition activist; Margaret Hany, Professor of Neurobiology, Columbia University Medical Center