Ukraine says work has started at three ports aimed at forming "green corridors" to allow grain exports.
A spokesperson for the Odesa military administration said naval teams will build routes out of southern ports in Odesa, Chornomorsk and Pivdennyi.
Once the routes are established, "caravans" of ships led by Ukrainian naval vessels will sail through the Black Sea, Serhiy Bratchuk said.
Kyiv and Moscow struck a deal to allow the grain exports last week.
Under the deal, which was brokered by Turkey and the UN, Russia agreed not to target ports while grain was in transit, while Ukraine pledged to guide cargo ships through waters that have been mined.
However, the agreement was thrown into chaos less than 24 hours after the deal was signed, when two Russian missiles targeted a port in the city of Odesa.
https://www.bbc.com/news/world-europe-62315781
