Anton Bogdanovych, whose family is in Kyiv, says it's tough not knowing what's going on amid Russia's invasion of Ukraine.
Mr Bogdanovych told Sky News Australia he tries to connect with his family "whenever possible".
"The problem is that they hardly sleep ... and we don't want to wake them up in those rare occasions where there are no sirens and no bombing.
"We established a system where they just let us know regularly that they're okay.
"It's our land ... so Putin just denies the existence of my country and people are not prepared to give up."
