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Photo: BBC
Russia is tightening its grip on the strategically significant city of Sievierodonetsk, located in the fiercely contested Donbas region of eastern Ukraine.
Capturing Sievierodonetsk has been a top military goal for Moscow, and Russian forces now control most, but not all, of the city, and have it three-quarters encircled.
After weeks of heavy shelling, Russia is now amassing a large number of troops to the city in an attempt to gain full control of Sievierodonestsk.
Meanwhile, the city is quickly running out of essential supplies, with thousands of civilians trapped in the city, some sheltering in bunkers beneath the Azot chemical plant.
The city has been largely off-limits for reporters since May given the dangers of the sustained Russian bombardment.
Independent journalist Billy Nessen was the only reporter to remain in Sievierodonetsk for more than a day during the protracted siege - he ended up spending forty days there.
He decided to leave when shelling escalated and Russian troops entered the city and is now in Dnipro, where he speaks to Kathryn.
Photo: BBC