Chinese President Hu Jintao, Kazakh President Nursultan Nazarbayev, Kyrgyz President Kurmanbek Bakiyev, Russian President Vladimir Putin, Tajik President Emomali Rakhmonov and Uzbek President Islam Karimov, wave after a tree planting ceremony marking the 5th anniversary of the founding of the Shanghai Cooperation Organization (SCO) at a hotel in western Shanghai, east China on June 14, 2006. (Xinhua Photo)