MOSCOW, May 15. /TASS/. The Collective Security Treaty Organization (CSTO) acts as a guarantor of the sovereignty of the member states, having proved its effectiveness in ensuring regional stability, Chairman of the CSTO Parliamentary Assembly, Speaker of the State Duma Vyacheslav Volodin congratulated the speakers of the parliaments of Armenia, Belarus, Kazakhstan, Kyrgyzstan, and Tajikistan on the 30th anniversary of the signing of the Collective Security Treaty.

"The CSTO has proven its effectiveness as a guarantor of regional stability, protection of the independence and sovereignty of the member states. Today, the organization serves as a dependable deterrent to the challenges and threats posed by international terrorism and extremism. The CSTO contributes significantly to the battle against drug trafficking and weapons, organized transnational crime, illegal migration," Volodin was quoted on the website of the State Duma.

Volodin stated that the CSTO peacekeepers' efficiency in supporting Kazakhstan in stabilizing the situation in January of this year indicates the organization's "maturity.".