Oil versus Grain In the conflict with Russia, the G7+ has employed a cap on the price of petroleum. The goal is to reduce Russia’s export earnings and thus undermine its war effort. By contrast, the goal has been to help Ukraine, both with munitions and the EU waiving duties on that nation’s agricultural exports. While most of Ukraine’s exports have moved through the Black Sea grain corridor agreement, that is not an assured route and increasing volumes have moved westward through Poland, and or even south to Romania. But that has depressed prices for those nation’s farmers and there is discussion of reintroducing tariffs on Ukraine’s exports. An alternative is to better assist Ukraine’s grain exports, e...