JMHO (and with very few exceptions) that may be said of "the top level" of every country, not just Ukraine.
I'd be absolutely delighted to be proven wrong. Not to mention shocked outta my socks.
There is corruption and then there is venal corruption.
“First, Zelensky and his team started promoting the idea that he was “like any other businessperson in Ukraine.” This statement was repeated by everyone on the presidential team in response to the revelations of Zelensky’s offshore holdings, suddenly exposed in the Pandora Papers.”
“The disclosures contained in the Pandora Papers shook many societies around the globe this fall. The leaked documents were analyzed by a consortium of journalists, who found “financial secrets of 35 current and former world leaders, more than 330 politicians and public officials in 91 countries and territories, and a global lineup of fugitives, con artists and murderers.”
“To the surprise of the general public, Volodymyr Zelensky’s name appeared on the list of offshore company holders. The documents are testament that Zelensky and his partners (now the heads of security agencies and part of the executive branch of government) owned offshore companies in the British Virgin Islands, Cyprus, and Belize. These companies were used to “defend his business in Ukraine,” the president explained. Prior to the 2019 election campaign, Zelensky had turned over control of his shares to his current chief aide and head of the country’s Security Service, but Zelensky’s family continues “receiving money from the offshore [business operations].”