I had a conversation with Professor Sergey Karaganov and Alexander Mercouris about Russia changing its nuclear doctrine. Karaganov was an advisor to Brezhnev, Gorbachev, Yeltsin and Putin. He has been the main proponent of lowering Russia's nuclear threshold. Putin had previously told Karaganov that Russia was not prepared to change the nuclear doctrine, however Putin has reversed his position and is now changing the nuclear doctrine according to Karaganov’s recommendations.