In their first period of rule they seemed to have enough on their hands inside Afghanistan to think of meddling elsewhere- somewhat different from ISIS
They may well "shelter" some of the unsavoury terrorist crowd but I don't see them marching on their neighbours. The stability of the 'Stands will be driven by their own internal issues and politics - but with Mr Putin at hand to point out what can be achieved by the smack of firm government - Chechnya for example.......