
Rising Russia-Ukraine tensions could disrupt up to 13% of global corn and wheat exports, with Ukraine supplying about 12% of world wheat export needs. Ukraine has shipped 16.7 million tonnes of wheat this season, and 7.5 million tonnes face non- or delayed delivery risk in a conflict.
Russian exports could also be hit if Black Sea ports are paralysed or Russia is cut from SWIFT.
A tight wheat balance sheet combined with possible loss of Black Sea supply would push importers toward EU, US, Argentine and Australian wheat, supporting global wheat and corn prices.
After 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.
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.