Co-leader Claudia Roth (L) of the environmental German Greens party (Buendnis 90 Die Gruenen) smiles as she receives a piece of fair-trade chocolate from a man dressed as Santa Claus during a party congress in the western German city of Cologne December 3, 2006. The Greens gathered for a three-day congress to discuss their future policy. REUTERS/Arnd Wiegmann (GERMANY)