Presidents Dimitri Medvedev and Hu Jintao, of Russia and China respectively, are expected to meet Ahmadinejad on the sidelines of the summit, which starts on Wednesday in Astana, the Mehr and Fars news agencies said.
Iran has been invited to attend the summit, which will bring together the leaders of China, Kazakhstan, Kyrgyzstan, Russia, Tajikistan and Uzbekistan, as an observer.