Oleksiy Arestovych

As Reuters reports, Russia captured the city of Lysychansk on Sunday, ending its offensive on one of the two areas that make up the bulk of Donbas, an industrially developed region in eastern Ukraine.

United States diplomats will begin a gradual return to Ukraine this week, Washington's secretary of state and defence chief said on April 25, as they announced $700 million in military aid during their first war-time visit to Kyiv.

Ukrainian President Volodymyr Zelensky has warned that he will suspend peace talks with Russia if the last defenders of Mariupol are killed. The strategically important city has been under siege by Russian forces for weeks, and planned evacuations have been canceled due to heavy shelling.