Ukraine says 10 of its soldiers have been killed and 27 wounded in the east of the country in the past week.

Diplomatic progress towards a political solution remains slow, weeks before a deadline when Europe must decide whether or not to maintain sanctions against Russia.

BBC correspondent Tom Burridge, along with producer Daryna Mayer and cameraman Alex Shpigunov, travelled with the Ukrainian military to one of the most volatile parts of the front line, on the edge of the town of Avdiivka.