I don't know what to think for Afghanistan, a government without ability to maintain stability is not useful, and Taliban is a bit backward, and I don't know if we can expect them to change when they take full control of the country. With modern weapons, something like a revolution would be impossible to happen in any country, AND a government not through revolution really does not last.
Or if it had been an instant success, instead of the US pouring cash and arms in to keep the conflict going as long and destructively as possible. The Soviets didn't have a choice but to participate in a conflict on their border.
Unfortunately, the mongols came and burnt everything to the ground/left the city a literal pool of blood.
Makes for good reading in the 21st century I guess.