The Iran war has blocked the Strait of Hormuz, halting 35% of global nitrogen fertilizer (urea) shipments. Prices doubled from ~$350 to >$700/ton. China has halted fertilizer exports, and a key Qatari plant is damaged (3-5 year repair). Fertilizer is a critical, inelastic input for global agriculture. Supply shock leads to unprofitable farming, crop switching, and potential famine (as seen post-Ukraine war). This exposes extreme fragility in concentrated global supply chains. Companies with local, resilient nitrogen fertilizer production capacity (e.g., in the US) or those developing alternative production methods will be strategic assets. The crisis forces a rethink on "luxury beliefs" about exploiting natural gas for critical inputs. A swift end to the war and reopening of the Strait. Rapid diplomatic resolution with China to restart exports.