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Russia and Ukraine have stepped up attacks on each other's Black Sea grain terminals, forcing shippers to delay or cancel cargoes during peak export season. Drought and heat are also cutting wheat output, including in South Africa's Swartland, and Chicago wheat hit a three-year high on Friday.
Lost Black Sea export capacity and weaker crops tighten global wheat supply, supporting higher wheat prices and feed-grain substitution costs for buyers.
aljazeera.comEdna MohamedAug 31, 2026After 361 past bullish geopolitics events, Wheat (SRW) moved a median +0.7% over 5 sessions (58% higher; middle half -1.4% to +3.7%), and +1.3% over 20.
After 323 past bullish geopolitics events, Corn moved a median +0.5% over 5 sessions (57% higher; middle half -1.5% to +2.9%), and +0.9% over 20.
After 94 past bullish geopolitics events, Wheat (HRW) moved a median +0.1% over 5 sessions (50% higher; middle half -2.7% to +5.8%), and +0.1% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.
Escalating Black Sea terminal attacks and heat-driven output cuts drove Chicago wheat to three-year highs, the core supply shock.
