One of Russia's most senior security officials is in Tehran for talks with Iranian officials on cooperation in security and other fields. The official, Sergei Ivanov, runs the powerful Russian Security Council which is chaired by President Putin. A statement said Mr Ivanov's talks would focus on security in Central Asia, which it said was facing a real threat of international terrorism from the territory of Aghanistan, BBC World Service. It said he would also be discussing economic cooperation, including the devlopment of the Caspian Sea with its large oil reserves. The BBC Russian affairs analyst says the Security Council is now the key decision-making body in Russia.