Caspian Sea Littoral States summit in Tehran

(L-R) Turkmenistan's President Gurbanguli Berdymukhamedov, Azerbaijan's President Ilham Aliyev, Kazakhstan's President Nursultan Nazarbayev, Russian President Vladimir Putin and Iranian President Mahmoud Ahmadinejad arrive for a group photo during the Caspian Sea Littoral States summit in Tehran on 16 October 2007. Caspian Sea states declared on Tuesday they would not let their soil be used for an attack on any of them, an apparent response to speculation the United States could resort to force in its nuclear row with Iran. (UPI Photo/Anatoli Zhdanov)