How Conflict Shocks Travel Along Food Supply Chains

Why It Matters

Because price shocks travel through supply chains, distant, peaceful communities suffer food‑security and welfare losses, expanding the true cost of conflict. Targeted protection of strategic transport routes can deliver large welfare gains at relatively low security costs.

Key Takeaways

• Conflict along transport routes lifts maize prices up to 0.4% per incident.
• Price spikes reach markets 900 km away, reducing food security.
• Securing primary corridors could cut prices by ~10% with modest effort.
• Alternative routes are longer; modest price gains unless travel time reduced.
• Violence cuts market access by ~70%, raising other commodity prices 6‑11%

Pulse Analysis

Supply‑chain disruptions caused by armed conflict are increasingly recognized as a hidden driver of regional price volatility. In Somalia, researchers combined geo‑coded incident data with FAO wholesale maize prices to isolate the effect of attacks on transport routes, finding a 0.4% price increase per incident—equivalent to 15‑44% of traditional shocks such as drought. The impact propagates up to 900 km, meaning markets far from the front line experience higher food costs, reduced nutrition, and downstream health and education setbacks. This evidence challenges the conventional focus on geographically targeted aid, which assumes welfare effects remain localized.

The study’s policy simulations reveal a cost‑effective lever: securing the primary corridor that serves the Lower Shebelle region could shave nearly 10% off maize prices while averting only 274 attacks, roughly 18% of total incidents on the shortest routes. By contrast, simply adding longer secondary routes yields modest gains unless travel time is also reduced. These insights underscore the importance of integrating transport‑security considerations into humanitarian planning, such as monitoring price signals along key corridors and allocating resources to protect chokepoints that link producers to distant consumers.

Beyond Somalia, the findings have global relevance. Similar supply‑chain vulnerabilities exist in other conflict‑prone regions and at strategic maritime chokepoints like the Strait of Hormuz, where disruptions can ripple through global commodity markets. Strengthening infrastructure, improving alternative route options, and embedding early‑warning price indicators can enhance economic resilience against violence. Policymakers and aid agencies that blend place‑based assistance with network‑aware strategies are better positioned to mitigate the hidden, far‑reaching costs of conflict.