In 2009 and 2010 he participated in the Bergedorf Circle of frm .
In 2001 Bierling was the German Marshall Fund fellow at the Pacific Council on International Policy at USC in Los Angeles .
In 2009 and 2010 Bierling participated in the Bergedorf Circle of frm .
In 2001 Bierling was the German Marshall Fund fellow at the Pacific Council on International Policy at USC in Los Angeles .