Firefighters extinguish a blaze at the warehouse on Thursday. Photo: Vadim Ghirda/VCG

People clean up glass and debris in a shell-damaged school in Kyiv on Thursday. Photo: Diego Herrera Carcedo/VCG

A woman retrieves personal belongings in her damaged apartment in Kyiv on Thursday. Photo: Alex Chan Tsz Yuk/VCG

A residential building destroyed by heavy shelling in Kyiv on Thursday. Photo: Alex Chan Tsz Yuk/VCG

A man walks past the destroyed Saltivka construction market in Kharkiv on Wednesday. Andrea Carrubba/IC Photo

Ukrainian police and territorial defence fighters carry goods from a damaged shop on Tuesday after shelling in Kharkiv. Vasiliy Zhlobsky/IC Photo

A market in Kharkiv destroyed by shelling on Thursday. Photo: Stringer/VCG

A building located in downtown Kharkiv standands gutted on Tuesday. Photo: Vasiliy Zhlobsky/IC Photo

People use carts to transport their belongings near a destroyed building Thursday in besieged Mariupol, Ukraine. Photo: Alexander Ermochenko/IC Photo

A theater where hundreds of people had taken shelter was bombed in Mariupol on Wednesday. Photo: Azov Battalion/VCG

Ukraine accused Russia of conducting the attack, though Russia denies it has attacked civilians. Photo: Azov Battalion/VCG

A military vehicle is seen near a humanitarian corridor in Mariupol on Thursday. Photo: Mikhail Tereshchenko/IC Photo

Firefighters work to extinguish a fire that broke out at the Saltivka construction market in Kharkiv on Wednesday. Exchanges of fire have happened in all regions of Ukraine as of Thursday, Interior Minister Denys Monastyrsky said. Photo: Andrea Carrubba/IC Photo