Ukraine war: The dangers of the front line with two fighters in Kharkiv

Mark and Vlad, both 22, have been on the front line since Russia's invasion of Ukraine began a month ago.

In this video, they show the BBC's Quentin Sommerville and cameraman Darren Conway the dangers they now face on a daily basis in Kharkiv.

The eastern city is only about 25 miles from the Russian border and has come under constant attack.

More on this story: Defiant troops to Russians: 'Go home while you're alive'