The southern Ukrainian port city of Mariupol on the Sea of Azov has been under siege from Russian missiles for almost a month now, its buildings devastated and its remaining population enduring hellish conditions.
An estimated 80 per cent of its infrastructure has now been decimated, with its electricity, water, heating and lines of communication all cut off and those attempting to flee forced to make their way through gun battles and past unburied corpses as Russian forces try to pound the city into submission.
