Russia fears contagion from Afghanistan through Turkmenistan and Tajikistan and north into the southern Russian republics and will stamp down heavily, and/or assist in stamping down, on any populist uprisings.
How long could Russia keep this up if trouble flares again here or elsewhere, given its stance WRT NATO?
A quick trawl of the web revealed all manner of trouble brewing in various of the 'Stans. Russia is certainly going to have its work cut out.