The CSTO joint air defense initiative appears to be bearing some fruit, with Russian air defense radars in Kyrgyzstan and Tajikistan getting an upgrade, Russian media report:
Within the framework of military-technical cooperation with countries of the Commonwealth of Independent States, Russia will upgrade radar stations in Tajikistan and Kyrgyzstan, as well as will supply spare parts and equipment for air defence hardware of CIS states...
The radar station P-18 will be partially updated in Kyrgyzstan, and a similar radar station will be updated in Tajikistan. The Almaz-Antei air defence concern has received applications from Armenia, Belarus, Kazakhstan and Uzbekistan, and considers supplies of spare parts and equipment for air defence hardware in these countries.
Not much is specified about what sort of upgrade this will be, but Interfax suggests it will affect the "information display":
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