And, let's not forget that the Russians went in to Afghanistan( they would say - like the West - invited in) because of the rise of extremist muslim factions.
But, of course, the USA undermined their efforts by supporting those tribal characters in the hills ( NOT the Taliban, you understand!).
Imagine, if now, the Russians decided to supply the Taliban with weapons.
What would we make of that!
No wonder the Russians don't trust the Americans.