When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
By Thomas Diez, Ingvild Bode, Aleksandra Fernandes da Costa. Thomas Diez is Professor of Political Science and International Relations at the University of Tübingen. He received his PhD from the University of Mannheim in 1999.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.