A summit of the heads of the Collective Security Treaty Organization (CSTO) states will be held in Kazakhstan June 18-19, Armenian Defense Minister, Secretary of the Security Council of the country Serge Sargsian told journalists today. In his words, within the framework of the summit meetings of CSTO Defense and Foreign Ministers are scheduled. It should be reminded that the CSTO comprises six states - Armenia, Belarus, Kazakhstan, Kyrgyzstan, Russia and Tajikistan.