Scott Simon

They're the National Anti-Corruption Bureau of Ukraine and the Special Anti-Corruption Prosecutor's Office.

And this probe is extensive.

It took 15 months, used about 1,000 hours of wiretaps.

There were seven alleged participants, including Timur Mindich.

He's a close business associate of Zelensky's.

Investigators say this group manipulated contracts at Enerhoatom, which is Ukraine's state nuclear energy company, and they got kickbacks, laundering roughly $100 million, like you mentioned earlier.

The scandal has forced the resignation of two ministers in Zelensky's government so far, but Zelensky has not been implicated in this probe, and he is calling for the prosecution of those accused of committing crimes.

And Joanna, what do you hear from Ukrainians?

Well, Scott, we've spoken to several Ukrainians in Kyiv about this corruption probe, and they are enraged, for lack of a better word.

Aleksandra Pokidko, she's 28 and works in marketing, and she told us this scandal is especially galling as Ukraine struggles to protect its power plants from constant Russian attacks.

It's very upsetting when Ukrainians, for example,

She told us that Ukraine must be united as it continues to defend itself from Russia and that it's painful to consider not trusting Zelensky right now.

Has corruption been an issue in Ukraine?

Yeah, corruption used to be a big problem here, especially on the government level.

But in the last decade, Ukraine has made great strides in improving transparency and accountability and appointing these independent agencies that investigate corruption.

The European Union is considering Ukraine's membership right now, partly because of all this progress in fighting corruption.

So Ukrainians want to make sure there is no backsliding.

We spoke with Mikhail Otkach.

He's an investigative journalist at Ukrainska Pravda.

a prominent news outlet here.