CLEAN : Russian siege of Mariupol is 'genocide': Ukraine chief prosecutor

The transcript discusses the complexities of proving genocide, focusing on the situation in Mariupol. It highlights the lack of rules in the actions observed there, contrasting them with traditional war principles. The city is described as being under siege, with restricted access to basic necessities. The discussion also touches on the accountability of war crimes and the role of the ICC in prosecuting such acts.

What role does the Russian Federation play in the situation in Mariupol according to the speaker?

Who does the speaker refer to as the 'main criminal of the 21st century' and why?