Vitali Klitschko says he will take up arms against Russian invaders
Kickin' It with Kiz: Stick to sports? Not when we stand with boxing Klitschko brothers and the brave people of Ukraine. – The Denver Post
Vitali Klitschko, Kyiv's Mayor, Says Russia Aims to Destroy Ukraine - The New York Times
Vitali Klitschko - Ticketcorner
Meet the mayor of Kyiv, Vitali Klitschko, known as Dr. Ironfist : NPR
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Vitali Klitschko ready to join Ukraine's fight against Russia
ESPYS 2022: Vitali Klitschko, former boxing champion and mayor of Kyiv, to receive Arthur Ashe Courage Award at the ESPYS - ABC7 San Francisco
Is It Safe to Return to Kyiv? Klitschko Boxing Heroes Warn Its Dangerous - Bloomberg
Wladimir Klitschko - Wikipedia
Rusia y Ucrania | Vitali Klitschko: el famoso exboxeador que se convirtió en alcalde de Kiev y hoy toma las armas para luchar contra las fuerzas rusas - BBC News Mundo
The Klitschko brothers, heavyweight boxing legends, vow to fight for Ukraine | CNN