Varoufakis is just one of many people who have come up with fancy new terms for capitalism and imperialism. It’s not to say that he doesn’t have an important perspective on some things, but coming up with new terms for things defined over a century ago only serves to distract.
If you follow EU politics, yes, otherwise, not really.
She’s Kaja Kallas, recently PM of Estonia and now the EU representative for foreign affairs. She’s a rabid Russophobe and excitable warhawk.