"Before Russia’s invasion of Ukraine almost two years ago, the idea of a Ukrainian oligarch languishing behind bars was unthinkable, laughable even. The country’s oligarchs, like their Russian counterparts, were generally considered above the law, in good part because they, in effect, owned the law. They backed sympathetic politicians or were politicians themselves; some were widely suspected of bribing influential members of the judiciary.
The oligarchs’ reputation for being untouchable vanished in September, when Ihor Kolomoisky, the tycoon who was an open supporter of Volodymyr Zelensky in the run-up to his 2019 presidential victory, was detained by the Security Service of Ukraine (SBU). The arrest of such a wealthy and influential businessman was unprecedented."
https://www.theglobeandmail.com/world/article-ukraines-oligarchs-are-no-longer-considered-above-the-law/