Wladimir Klitschko

The ex-heavyweight champion and his brother Vitali have both taken up arms to defend their country against Putin's Russian military.

The Klitschko brothers have been a light in the darkness throughout this last week.

Tyson Fury praised the Klitschko brothers.

Wladimir and Vitali Klitschko have both been very vocal in trying to help the situation in their home country of Ukraine.

400 highly-trained​ Russian mercenaries​ have been sent to the capital of Kyiv to assassinate a number of high-profile Ukrainian figures.

Both Klitschko brothers have vowed to help defend Ukraine from Russia.

"I don't have another choice, I have to do that. I'll be fighting."

Wladimir And Vitali Klitschko issued a message to 'all international partners'.

From Jake Paul and Conor McGregor to Mike Tyson and Floyd Mayweather, these boxing facts really caught some fans by complete surprise.