Fighters with the notorious Azov regiment were reportedly filmed desperately defending the besieged city of Mariupol.
In the clip, which is filmed from a tank, bullets stream into a Russian armoured personnel carrier sporting the letter Z, which is destroyed under the bombardment.
The Ukrainian Ministry of Defence released the video on Monday evening and a spokesperson said: "Brilliant combat work of the units of the Allied Forces, which continue to defend Mariupol."
