The Crimean coast is so important that Russia seized it from Ukraine. But what have been the costs of gaining this valuable prize? The final leg of our five-episode journey across and around the Black Sea takes us to the port of Sevastopol.

And we also reveal details about the next mini-series from The Compass.

Producer Monica Whitlock.

Photo: The embankment of Sevastopol, Crimea, Ukraine Credit: Getty Images