MYKOLAIV/NEAR KUPIANSK, Ukraine—Russia jolted world grain markets with an escalation in the Black Sea, mounting a third straight night of air strikes on Ukrainian ports and issuing a threat against Ukraine-bound vessels to which Kyiv responded in kind.
At least 27 people were reported hurt in the air strikes on the ports, which set buildings ablaze and damaged China’s consulate in Odesa.
The United States said Russia’s warning to ships indicated Moscow might attack vessels at sea following Moscow’s withdrawal this week from a U.N.-brokered deal to let Ukraine export grain. The signals that Russia was willing to use force to reimpose its blockade of one of the world’s biggest food exporters set global prices soaring….