160. How Putin's war could disrupt global food supplies

Episode Summary

Executive Summary: This episode frames Russia’s invasion of Ukraine as a shock to global trade and food security, especially wheat. After a brief show update and farewell from co-host Samaya Keynes, Chad Bown and Joe Glauber explain why low stocks, high fertilizer costs, and disrupted Black Sea exports could drive prices higher and intensify shortages, especially in poorer import-dependent countries.

Main Topics: Podcast transition and co-host departure (Priority: 3/5): Samaya Keynes announces she is stepping down as co-host while Trade Talks will continue, and the episode serves partly as a farewell to her role on the show. Russia’s war in Ukraine and sanctions (Priority: 5/5): The hosts outline the invasion timeline and the sweeping sanctions imposed by the US, UK, EU, Canada, Japan, and others, noting the war is still escalating despite restrictions. Global wheat market basics and concentration of supply (Priority: 5/5): Joe Glauber explains wheat’s role in diets, its seasonal production cycle, and why Russia and Ukraine matter disproportionately as major producers and exporters. Fertilizer and input-cost inflation (Priority: 5/5): The discussion highlights how rising natural gas prices and earlier export restrictions from major suppliers raised fertilizer costs before the war, worsening farmers’ outlook. Historical precedent: export bans and food riots (Priority: 5/5): The conversation revisits 2007-08 and 2010-11, when drought, export bans, and high prices contributed to severe market disruptions and social unrest, including the Arab Spring. Policy responses and what should be avoided (Priority: 4/5): The speakers evaluate proposed fixes such as production subsidies, crop switching, export restrictions, and sanctions design, concluding that policymakers should preserve trade flows and exempt food and fertilizer where possible. Humanitarian and geopolitical consequences (Priority: 5/5): The episode emphasizes that shortages and price spikes will fall hardest on import-dependent and aid-dependent countries, especially in North Africa, the Middle East, Sub-Saharan Africa, and parts of Asia.

Key Arguments: Russia and Ukraine are central to global wheat supply, so war in the region can rapidly tighten world markets and raise prices. Wheat prices were already extremely high because of drought-related supply losses, strong demand, and low ending stocks before the invasion. Fertilizer shortages and high energy costs could reduce crop output even outside the war zone by raising production costs globally. Export bans are counterproductive because they worsen global scarcity and often raise world prices more than they help domestic consumers. The best policy response is to keep trade moving, avoid adding costs to farmers, and exempt food and fertilizer from sanctions where possible. Poor countries and humanitarian agencies are especially vulnerable because they face high import bills and fixed aid budgets. Using subsidies or changing land use quickly will not solve the problem because agriculture has short planting windows and land set aside is often marginal. Historical experience from 2010-11 shows that food price spikes can fuel political instability and unrest. Monitoring systems like AMIS can help calm panic and reduce incentives for countries to impose damaging export restrictions.

Data Points: Trade Talks episodes completed: 159 episodes - Mentioned during the opening farewell and show update Russia and Ukraine share of global wheat production: More than 10% - Combined importance of the two countries in world wheat output Russia and Ukraine share of global wheat exports: About 25% to 30% - Their combined role in international wheat trade in a typical year United States share of global wheat exports: About 13% - Used to compare US role with other major producers Wheat share of human calories: 20% - UN estimate cited to show wheat’s dietary importance Winter wheat share in the northern hemisphere: About 85% - Seasonal planting pattern explained by Joe Glauber Spring-planted wheat in the US: About 15% - Portion of US wheat planted in spring Spring-planted wheat in the EU: About 5% - Portion of EU wheat planted in spring Spring-planted wheat in Russia: About 40% - Shows Russia’s significant spring wheat production Trade coming from the southern hemisphere: About 20% - Mostly Argentina and Australia Wheat market arrival windows: About 60% early summer; about 40% late fall/early winter - Describes when global wheat typically enters markets US conservation land set-aside: 21 million acres - Area in the Conservation Reserve Program discussed as a possible production expansion source Global wheat ending stocks: About 63 days of use - Indicator of how tight supplies already were before the war Low stock benchmark: Not seen since 2007-8 - Comparison for the current stock-to-use level Wheat prices in nominal terms: Highest since 2012 - Level before the war-related escalation Wheat prices in real terms: Highest since 2007-8 - Inflation-adjusted comparison Russian land affected in 2010 drought: About one-third of cultivable land - Referenced when discussing the 2010 export ban episode Estimated share of exports tied up by restrictions in 2010-11: About 14% to 30% - Different estimates of how much export restrictions contributed to price increases US wheat consumption per capita: About 80 kilograms - Compared with higher consumption levels in North Africa/Middle East North Africa/Middle East wheat consumption per capita: Over 120 to 150 kilograms - Illustrates why those regions are especially exposed to price spikes Ukraine’s share of world wheat exports: About 10% - Used to show why the war threatens global supply Russia’s share of world wheat exports: Another 20% - Potentially at risk if Russia deliberately restricts exports Ukraine crop already shipped before conflict: About 70% - Share of last year’s crop already exported when war intensified Ukraine crop still unshipped: About 30% - Crop trapped by port and rail disruptions World Food Program budget constraint: Fixed budget - Explains why higher wheat prices hurt humanitarian response

Pivotal Quotes: "food, obviously, I think that should be exempt" — Joe Glauber: On how sanctions should be designed so they do not worsen food insecurity "Let's don't make them any more expensive." — Joe Glauber: On the need to avoid raising farmers’ input costs, especially fertilizers "the food prices were the spark that really started a lot of those riots" — Joe Glauber: On the role of wheat and bread prices in triggering unrest during the Arab Spring

Implications: Global wheat markets are fragile, and the war could amplify shortages, inflation, and unrest. Policymakers should keep food and fertilizer flowing, avoid export bans, and support vulnerable importers and aid agencies.