Yevgeny Prigozhin has long enjoyed Putin's support – but for how much longer? He has given a face to the brutalization of the Putin regime, writes Frida Ghitis. He poses as Putin’s loyal bloodhound, but also threatens the very system the president has built up, she says.

Ghitis: Is this man powerful? Is he a megalomaniac? Desperate? All of the above? He is the story of one man's rise to unimaginable power, Ghitis says.