Russia for the first time on Monday attacked a port on the Danube River in Ukraine, close to the Romanian border, Ukrainian and Romanian officials said, destroying a grain hangar in an escalation of its efforts to cripple Kyiv’s agriculture and risking a more direct confrontation with the United States and its European allies.
The assault on the port in the town of Reni, across the river from Romania, a NATO member, targeted Kyiv’s…