translator: i could no longer be in russia. reporter: a moment of dissent from a former top businessman in russia as he declares to independent russian online publication the insider, that he left one of the jewels in the kremlin s economic crown to fight for ukraine. translator: my homeland is in danger now, and i can t live a well-fed, contented life while my father is being killed, while my relatives, acquaintances, friends are being killed. reporter: igor volobuev was born in ukraine but worked for more than 20 years in russia. until recently, he was a vice president at gazprombank, one of the largest private banks in the country and also part of the energy supplier gazprom. that was before he left for ukraine. we won t specify where he is now, but he told cnn why he d come to this decision.