Wladimir and Vitali Klitschko have doubled down on their pledges to defend their country from foreign invaders, and have promised to keep Ukraine free or die trying.
The two former boxing world champions are currently in Kyiv, where they have taken up arms against the Russian and Belarusian forces which began their assault on the country last Thursday.
Vitali Klitschko feels a special need to lead by example as the mayor of his city.
