Peter Kuzmin, who has friends and relatives in Russia and Ukraine, has organised a rally to take place in Melbourne on Sunday where people will protest against Russia's actions.
"This is absolutely unimaginable, it's worse than the worse nightmare ... it's just hard to describe how heartbroken I am and how angry I am," he told Sky News Australia.
"This is unacceptable to me as a patriotic Russian, it's against everything that I grew up with."
He said the move is "suicidal" for Russia and "horrible" for Ukraine.
