Ukraine conflict: Kharkiv family desperate to treat daughter's cancer - BBC News
Polina and her family are trying to flee Kharkiv after spending days sheltering in their basement.
Her expensive treatment is running out. Her mother faces a dilemma - should the family stay in their basement for safety, or risk going outside to try and flee Kharkiv and get help for their daughter?

Warning - this video contains distressing footage of an explosion in Freedom Square, Kharkiv. It has been verified by the BBC but the source is unknown.