Ukraine: What happened today, Monday, April 11

About a quarter of Ukraine's 44 million population have been forced from their homes, cities turned into rubble, and thousands of people have been killed or injured

A family mourns a relative killed during the war with Russia, as dozens of black bags containing more bodies of victims are seen strewn across the graveyard in the cemetery in Bucha. Picture: AP Photo/Rodrigo Abd

Ukrainian troops have repulsed several Russian assaults in the country's east, the focus of a new offensive by the invading forces, British intelligence said on Monday, while President Volodymyr Zelenskyy said this week will be crucial to the course of the war.

Russian forces were also pushing their offensive to establish control over the southern port city of Mariupol, a key target whose capture would link up areas of Russian control to the west and east.