Ukraine pounds Black Sea Fleet’s ‘last major stronghold’ while Putin flexes naval power in Pacific

Russian President Vladimir Putin threatened Wednesday to seize European vessels in retaliation if European countries begin seizing Russian merchant ships after Ukraine launched a major overnight attack on a key Russian Black Sea naval and commercial hub and Moscow staged large-scale war games in the Pacific.

The developments underscore a growing battle at sea: Ukraine is hitting one of Russia’s most important Black Sea naval and export hubs, while Moscow is warning it could seize European vessels and flexing its naval power in the Pacific. Though the events are not directly linked, they show how the war is increasingly extending beyond...