Weaponizing supply chains: How Iran and China drive strategic food insecurity in modern conflict

Iran did not improvise the Hormuz crisis. The mine stockpiles, the Islamic Revolutionary Guards Corps’ fast-boat fleet, and the Houthi program at Bab al-Mandab are a coordinated architecture assembled over the years to make commercial insurance a controllable coercive mechanism. The 2024 Houthi campaign proved the concept. Without sinking a vessel, it drove Asia-Europe freight rates up sevenfold and collapsed Suez Canal revenues roughly 50%. Iran does not need to sink fertilizer ships. It needs to make them uninsurable. Any sufficiently concentrated agricultural input supply chain is a targetable strategic system. No G7 government has built the architecture to manage this kind of deliberate attack.

The convergence of two distinct supply restrictions, one geographic, one political, constitutes a compound chokepoint on global agricultural inputs. The geographic gate is the Strait of Hormuz, through which roughly one-third of global seaborne fertilizer trade transits, including the ammonia, urea, and sulfur that underpin crop production on five continents. The policy gate is China’s export licensing regime, through which Beijing periodically restricts urea and NPK exports. When the U.S.-Israeli campaign against Iran commenced on February 26, 2026, both gates closed within three weeks. This convergence makes 2026 structurally unprecedented.

Nitrogen-based fertilizers, urea, ammonia, and NPK compound blends, are not optional crop inputs. Without nitrogen fertilization, global crop yields could decline on the order of 40 to 50 percent, making food production for a population of 8.2 billion impossible. The global supply chain for these inputs has highly concentrated ownership and geography.

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