CSTO (Collective Security Treaty Organization) and NATO are not antagonists and they must collaborate. The cooperation can strengthen the International Security System, says CSTO Secretary General Nikolai Bordyuzha . In his opinion, especially it would be important to establish an anti-drug belt around Afghanistan, strengthen the Tajik-Afghan border, and in future - to cooperate in peacekeeping, liquidate the results of emergency states of man-caused and natural character, reports Golos Rossii. CSTO consists of Russia, Belarus, Armenia, Kazakhstan, Kyrgyzstan, Tajikistan, and Uzbekistan.