The Russian authorities said that a woman had been detained in the killing of an influential pro-war military blogger known as Vladlen Tatarsky in St. Petersburg.
Evidence is mounting that Moscow has failed to make much progress in the Donbas of eastern Ukraine, despite months of fighting in the industrial and agricultural region close to the Russian border.
The foreign ministers of NATO member states are set to meet in Brussels this week to discuss the war in Ukraine and other global issues. The meeting will include representatives of Finland, which cleared the final hurdle to join the alliance last week, and Sweden, which has applied to join.