About this episode: Humanitarian crises don't exist in a vacuum—they are shaped by geopolitical actions like blockades, sanctions, and armed conflicts between countries. In this episode: Stanford University scholar Ruth Gibson details how geopolitical decisions impact civilians on the ground and how this framing applies to current situations in Iran, Cuba, and Ukraine. Guest: Ruth Gibson, PhD, is a scholar at Stanford University where she holds appointments in at the Center for Innovation and Global Health and the Center for International Security and Cooperation. Host: Dr. Josh Sharfstein is distinguished professor of the practice in Health Policy and Management, a pediatrician, and former secretary of Maryland's Health Department. Show links and related content: U.S. to Blockade Ships Entering or Exiting Iranian Ports—U.S. Central Command Block Food and Medicine?—Geopolitics and Humanity Dispatch Cuban doctors endure burnout, blackouts as once-vaunted healthcare declines—Reuters Willing Accomplices: Gazprom & Rosneft's Role in the Transport and Indoctrination of Ukraine's Children—Yale School of Public Health Humanitarian Research Lab Caring for Children in War-Torn Ukraine—Public Health On Call (November 2025) Starvation in Gaza—Public Health On Call (July 2025) Transcript information: Looking for episode transcripts? Open our podcast on the Apple Podcasts app (desktop or mobile) or the Spotify mobile app to access an auto-generated transcript of any episode. Closed captioning is also available for every episode on our YouTube channel. Contact us: Have a question about something you heard? Looking for a transcript? Want to suggest a topic or guest? Contact us via email or visit our website. Follow us: @‌PublicHealthPod on Bluesky @‌PublicHealthPod on Instagram @‌JohnsHopkinsSPH on Facebook @‌PublicHealthOnCall on YouTube Here's our RSS feed Note: These podcasts are a conversation between the participants, and do not represent the position of Johns Hopkins University.