War has long stopped being waged with weapons alone - it's waged with grain too. The price of wheat on world markets jumped over 4 percent after Ukraine attacked Russian vessels in the Sea of Azov. When two nations fight over who can choke off the other's supply, the bill is paid by the whole world - including those with nothing to do with the front.

Ukraine claims it destroyed 76 vessels, among them cargo ships carrying grain, paralyzing traffic in the Sea of Azov. Russia hit back by striking port infrastructure in Odesa, Chornomorsk and Izmail - the very ports through which Ukraine exports its grain. Both sides are attacking exactly what the world needs: the logistics of food.

This is a blockade running both ways. Ukrainian strikes aim to break Russia's supply chain; Russian strikes destroy Ukraine's exports. And the result is the same - less grain on the market, higher prices, and jitters for everyone who imports food. Grain has become a weapon, and global food security the collateral damage.

For the Balkans this isn't an abstract market number. When wheat rises worldwide, so does bread, flour and animal feed - and our markets are small and dependent on imports. We don't decide the war in the Sea of Azov, but we feel it in every loaf of bread. The question is how long the world will watch two nations turn the world's breadbasket into a battlefield before someone says food must not be ammunition.