This week on Babel, Jon talks with Carsten Wieland, a German diplomat who served in the United Nations with three separate special envoys to Syria. They discuss the scale of the humanitarian crisis in Syria, the politicization of humanitarian aid in Syria, and the implications of humanitarian aid policy in Syria for broader international humanitarian law. Then, Natasha Hall, Will Todman, and Danny Sharp continue the discussion about the upcoming vote on cross-border operations in the UN Security Council and its implications.  Natasha Hall, "The Implications of the UN Cross-Border Vote in Syria," CSIS, June 4, 2021. Carsten Wieland, Syria and the Neutrality Trap: The Dilemmas of Delivering Humanitarian Aid through Violent Regimes, May 2021. Natasha Hall and Will Todman, "Lesson's Learned from a Decade of Humanitarian Operations in Syria," CSIS, April 22, 2021. Episode Transcript, "The Politicization of Aid in Syria," CSIS, June 29, 2021.