For the CSTO, Afghanistan Might Be the Last Credible Threat
The Russian-led Collective Security Treaty Organization is conducting its “Rubezh (Frontier) 2026” military exercises from September 12-19. Those exercises are designed with Afghanistan in mind, a country that the CSTO has been talking about frequently in 2026, and also one where militant groups pose a shared threat to its members. And even the Taliban are no longer viewed as the threat they once were. Frontier 2026 The Frontier 2026 exercises are taking place at the Koktal training ground in southeastern Kazakhstan’s Zhetysu Province. The CSTO’s Rapid Deployment Force is practicing to repel cross-border incursions in mountain and desert terrain. The exercises come this time as concerns about infiltration by militants in Afghanistan into CIS territory are increasing. Russian Defense Minister Andrei Belousov said on September 8 that Russia is paying special attention to strengthening Tajikistan’s border with Afghanistan. The Tajik authorities have been calling for additional aid for the country’s border forces since a series of attacks from Afghanistan in November 2025 left five Chinese workers in southern Tajikistan dead, followed by an attack in December that killed two Tajik border guards. Tajikistan has regularly asked for international help in guarding its frontier with Afghanistan since independence in 1991. But after the violence at the end of 2025, the Tajik government appealed especially to its fellow members in the CSTO for increased assistance. CSTO Secretary General Taalatbek Masadykov said at the end of August that the first shipment of weapons and equipment would be sent to Tajikistan this autumn. Raison D’être The Collective Security Treaty was signed in Tashkent, Uzbekistan, in 1992 by representatives from Armenia, Kazakhstan, Kyrgyzstan, Russia, Tajikistan, and Uzbekistan. In 1993, Azerbaijan, Belarus, and Georgia joined. The purpose was simple. If any of the member states was attacked by an external enemy, that state could request aid, including military assistance, from the other members. In the early 1990s, there were potential enemies for the Treaty members in practically every direction. The Soviet Union had collapsed in late 1991. There were questions about how the former Communist Bloc countries and their new Western allies might act. The theocratic regime in Iran was a possible threat to the South Caucasus and Central Asia, and the latter region had unstable Afghanistan to worry about also. China was a concern for Central Asia and Russia. Back then, banding together made sense for the nine newly independent states that signed the treaty. When Azerbaijan, Georgia, and Uzbekistan dropped out in 1999, it appeared the Collective Security Treaty was on the brink of becoming irrelevant. After Vladimir Putin became Russia’s president, he put a new emphasis on a security bloc within the CIS, and in 2002, the remaining six treaty members signed a new charter. However, now, in 2026, the list of the CSTO’s potential external threats is greatly reduced. Far from being a security concern, China is now a leading trade partner for Russia, Kazakhstan, Kyrgyzstan, and Tajikistan, and provides military assistance to all four countries. Iran’s relations with the West remain...
