Yes they have been trying to start shit, but it is clear that Russia has things in those regions pretty much under control. Iran being a regional power also has some weight it can throw around to keep things calm in the Caucasus. We can expect low intensity conflict like Nagorno-Karabakh but not much more. The US have also been trying to get Georgia to restart their aggression against Russia and no dice - the Georgians are not as suicidal as the Ukrainians, they learned their lesson. And as for Kazakhstan, don’t forget that China also has a vital interest in keeping Central Asia stable for the sake of the Belt and Road Initiative. A US puppet regime in Kazakhstan or any kind of large scale conflict there would be just as if not even more damaging to China. The US is fighting an uphill battle there in the backyard of both of its arch-enemies. They will not succeed and the abortive way their last attempt ended shows that they are losing their ability to successfully pull off these kinds of ops. And as the US empire gets weaker and Russia/China stronger on the world stage the difficulties will only compound.