When pressed to cite role models, Mr Campi adds Sweden's prime minister, Fredrik Reinfeldt.

ECONOMIST: What is Gianfranco Fini up to?

So, how big, relatively, were the current hotspots of Yellowstone and Campi Flegrei?

FORBES: Predicting The Supervolcano (Or, We're All Going To Die? It Must Be Tuesday)

Campi Flegrei is a large active caldera.

FORBES: Predicting The Supervolcano (Or, We're All Going To Die? It Must Be Tuesday)