Berlin doesn't house any of the European Union's key institutions, but there is no doubt this is the power capital of Europe - something Greece's new left-wing government now knows all too well. Germany calls the shots when it comes to shaping Europe's economic policy. HARDtalk's Stephen Sackur speaks to an influential member of chancellor Merkel's CDU party - vice-chairman of the par liamentary party Michael Fuchs. In the high stakes showdown over Greece's debt, has Germany used its power wisely?