Ihor is Ukrainian Jew vis-a-vis USSR. He is the second wealthiest Ukrainian, only behind Rinat Akhmetov (also a jew).[1]
Ihor is the founder of PrivatBank, Ukraine's largest commerical bank. In December 2016 PrivatBank was nationalized. "After taking over the bank the government had said it wanted to recover money it says was siphoned out while Kolomoisky owned it."[2]
Ihor is the primary share holder of 1+1 media group. 1+1 was the channel for which "Servant Of The People" was aired. A show starring Volodymyr Zelenskyy. 1+1 provided logistical support and security for Zelenskyy."It is also reported that Zelenskiy traveled 14 times in the past two years to Geneva and Tel Aviv, where Kolomoisky is based in exile."[3] Zelenskyy assumed office in May of 2019. In April 2019 the nationalization of PrivatBank was reversed.
Ihor "funds the Dnipro Battalion, a private army that, according to the Wall Street Journal, has 2,000 battle-ready fighters and another 20,000 in reserve. Newsweek reported that Kolomoisky has funded other militia groups, as well." [4] "The Aidar battalion is publicly backed by Ukrainian oligarch Ihor Kolomoyskyi, who also allegedly funds the **Azov**, Donbas, Dnepr 1, Dnepr 2 volunteer battalions, operating under orders from Kiev. Last spring Kolomoyskyi offered a bounty of $10,000 of his own money for each captured Russian "saboteur"."
Ihor has even sent his "private army" to defend his economic interests. In 2015 sent members of his militia to temporarily take over the offices of oil company UkrTransNafta in order to protect his financial interests in the company. [5]
Ihor also happens to be a political figure in these regions.
UkrTransNafta operated the Druzhba Pipeline. "Ukraine ships Russian oil to Slovakia, Hungary and the Czech Republic via the southern leg of the key 25 million mt/year Druzhba pipeline." We can recall that Nord Stream 2, owned by Gazprom (Russia) by passes Ukraine entirely.
tldr; Ihor is a Ukranian super jew who funded the political rise of Zelenskky in order to reclaim his bank. The money he receives through jewish usury is then funded to kill (tally is in the 20,000) Russian separatists and Ukrainians, by any means necessary. He's militaristic economic interest in OnG further muddies the water of Nord Stream 2 being cancelled.
What I can't find sources on is why he is so heavily opposed to Russia.