KYIV, July 23 (Reuters) - Shipowners halted vessel arrivals at Ukraine's Black Sea ports due to intensified Russian strikes, Kyiv said, as President Volodymyr Zelenskiy warned Moscow might escalate attacks in order to block the country's main corridor for grain exports.In recent weeks, Russia has pummelled logistics and port infrastructure in the southern Odesa region with missiles and drones. On Sunday, a missile strike on a ship carrying corn killed 10 people, mostly foreigners, Ukrainian officials said.

Ukrainian attacks in and around the Sea of Azov have sharply reduced Russia's grain exports at the start of the new agricultural season, leaving millions of tons of grain stranded…

It used to be that Russia’s and Ukraine’s military decision-makers mostly left civilian ships alone and at least didn’t go out of their way to attack them. That changed over the…