
The article explains how the Black Sea grain arrangement between Ukraine and Russia came about. Russian warships and Ukrainian mines had blocked Ukraine's ports after the February 2022 invasion, and Russia also seized grain and destroyed storage.
This background explains why Ukrainian export capacity is fragile and why any renewed disruption to the corridor could tighten world grain supply.
After 493 past geopolitics events, Wheat (SRW) moved a median +0.4% over 5 sessions (55% higher; middle half -1.4% to +3.6%), and +1.0% over 20.
After 464 past geopolitics events, Corn moved a median +0.3% over 5 sessions (54% higher; middle half -1.6% to +2.5%), and +0.5% 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.