September 29, 2014. From left: Iranian President Hassan Rouhani, President of Kazakhstan Nursultan Nazarbayev, Russian President Vladimir Putin, President of Turkmenistan Gurbanguly Berdymukhamedov and President of Azerbaijan Ilham Aliyev at the ceremony to release young sturgeon fish on the Volga River Embankment during a walk by heads of state of the 4th Caspian Summit member countries in Astrakhan.