MOSCOW – Germany’s ex-Chancellor Gerhard Schroeder is a legend in Russia. He serves Gazprom’s interests for a measly couple of million euros a year, sits in at sessions of the Russian Academy of Sciences, and writes books about his staunch friendship with “Genosse Wladimir,” who, in the not-so-distant past, earned himself the well-deserved nickname of “Stasi” among business circles in gangster-ridden St. Petersburg.