Russia's invasion of Ukraine entered its fourth week on Thursday, with Russian forces largely bogged down outside major cities and shelling them from a distance, raining havoc on civilians.
In the besieged southern city of Mariupol, a Russian airstrike destroyed a theater where hundreds of people were sheltering, burying many of them in the rubble, Ukrainian officials said. They said the number of casualties in the Wednesday attack was unclear as the entrance was blocked by debris.
