From left: Uzbek President Islam Karimov, Russian President Vladimir Putin, Kazakh President Nursultan Nazarbayev, Chinese President Hu Jintao, Kyrgyz President Kurmanbek Bakiyev and Tajik President Emomali Rakhmonov plant a tree to celebrate the fifth anniversary of the Shanghai Co-operation Organization at Shanghai's Xijiao State Guest Hotel yesterday. [AFP]