Azerbaijan does not consider its participation in the Collective Security Treaty Organization (CSTO) possible, head of the department for the external affairs of the President's administration Novruz Mamedov told Interfax agency today. To note, Armenia, Belarus, Kirghisia, Kazakhstan, Russia and Tajikistan serve on the CSTO. It should be also reminded that last Saturday Azeri MFA protested against the intention of Russia, one of the OSCE co-chairs, to form a new military grouping together with Armenia - one of the conflicting parties.