By Wilton Jackson The former world champion spoke to CNN about his decision. Former world champion boxer Oleksandr Usyk has joined a territorial defense battalion in Ukraine as the country defends itself following an invasion by Russia. Usyk appeared in aCNN interview on Wednesday from a basement in Kyiv, saying that he is ready to defend his country by any means from Russian forces as well as looters roaming the country. “If they will want to take my life, or the lives of my close ones, I will have to do it,” Usyk told CNN. “But I don’t want that. I don’t want to shoot, I don’t want to kill a…