He was secretary - general of the CDU from April to November 2000 .
Polenz served as chairman of the Committee on Foreign Affairs of the lower house of the German Parliament , the Bundestag between 2005 and 2013 .
Polenz was secretary - general of the CDU from April to November 2000 .
Polenz served as chairman of the Committee on Foreign Affairs of the lower house of the German Parliament , the Bundestag between 2005 and 2013 .