Last year's Maidan revolution in Ukraine was meant to usher in a new kind of politics and end official corruption and behind-the-scenes oligarchic influence. But an Austrian court last week heard claims that President Petro Poroshenko had his path to the presidency cleared for him only after a summit in Vienna with controversial oligarch Dmytro Firtash.
The Guardian: Firtash claims US extradition request is political interference

Dmytro Firtash (L), one of Ukraine's most influential oligarchs attends a trial on April 30, 2015 in Vienna.