dari (afghan persian)

Hello, I first would like to explain this a little bit. I have a friend who is learning Farsi and Dari in the navy. Recently I asked her to help me translate some quotes in to the Persian language for me. Currently she is in the process of moving between bases and communication with her is...

I saw some Pesian speakers here from both regions Afghanistan and Iran. I want to know what are the difference between them. What I have noted are the pronunciation and some grammatical points. Can you tell what are the other points.

Do both languages enjoy the same official status or is there a clear preference for one language over the other? In the Kite Runner, I think the protagonist is a Pashtun/Pakhtun but he spoke Farsi. Only some characters spoke in Pashtun. Is Farsi indigenous to the region? Thanks