The Night Wolves and their leader, dubbed "The Surgeon" for his knife-fighting skills, arrive in Crimea ahead of an illegitimate referendum on rejoining Russia.

Crimea had previously been a part of Russia until 1954, and people there voted to be reunited with Moscow.

Eight years later, Russian troops invaded Ukraine - with many of them attacking from Crimea. Report by Guinnesse. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn