This week on Babel, Jon Alterman speaks with Sinem Adar, a researcher at the German Institute for International and Security Affairs (SWP), where she works at the Centre for Applied Turkey Studies. Together, they discuss Turkey's evolving interests in Syria and their connection to Turkey’s wider foreign policy agenda. Then, Jon continues the conversation with Martin Pimentel and Will Todman to discuss the hard choices the United States needs to make about Turkey and Kurdish forces that have been fighting alongside U.S. troops in eastern Syria.