File photo of delegates of the environmental German Greens party voting during a party congress in Cologne

 
File photo of delegates of the environmental German Greens party voting during a party congress in Cologne
File photo of delegates of the environmental German Greens party (Buendnis 90 Die Gruenen) voting during a party congress in the western German city of Cologne December 2, 2006. REUTERS/Arnd Wiegmann/Files