Associated Press: The U.N. sanctioned two activist groups Monday after a Saudi Arabian nameplate was vandalized at a recent climate change conference. Three members of the World Wildlife Fund and Oxfam International were barred from future meetings for taking the Saudi plate at a June meeting, breaking it into pieces and distributing photographs of it in a toilet bowl. Christiana Figueres, the top U.N. climate official, also said WWF and Oxfam will be restricted to sending two and three …