Russian President Vladimir Putin landed in the north-western Kazakh city of Aktau on Sunday, ahead of the 5th Caspian Summit between the five Caspian states: Russia, Azerbaijan, Kazakhstan, Turkmenistan and Iran. A convention on the Legal Status of the Caspian Sea is to be signed at the summit. President of Azerbaijan Ilham Aliyev, President of Kazakhstan Nursultan Nazarbayev, President of... Еще Iran Hassan Rouhani and President of Turkmenistan Gurbanguly Berdimuhamedov will take part in the summit as well. According to the Kremlin, the five countries have been working on an agreement since 1996. The convention is to mark the legal status of the contested Caspian Sea.