
ISTANBUL — Since early August, more than 10 million metric tons of Ukrainian grain have been exported, most of it wheat and corn, through a humanitarian corridor set up in the Black Sea. The agreement that allows Ukraine to export grain has been a lifeline for Ukraine's crippled economy and has helped countries that were experiencing severe food shortages due to the war. It has also helped stabilize global food prices.
Shipments had essentially been blocked since the start of the war by the Russian navy. The United Nations and Turkey had to press for Ukraine and Russia to set up a system for letting ships through. The August deal hinged on parties agreeing to a complex maritime inspection routine, with international teams boarding ships to make sure they're not sneaking weapons, stowaways or exports of other items not in the agreement.