EUROPE - It's not often in Brussels that a leading EU official passes judgment on a minister from an EU member state, even in private gatherings. Nor is it normal for such an official to dare to invoke the German chancellor when doing so. But when it comes to Martin Selmayr, 46, the shock isn't quite as great. The German is the most powerful bureaucrat in Brussels, with some even going so far as to say that he is the true leader of the European Union. As head of Juncker's cabinet, he plays a significant role in determining which laws the EU passes and who is granted an audience with the Commission president. More than anything, though, Selmayr isn't satisfied with the duties typically performed by a top bureaucrat. He is determined to play a greater policymaking role.