I think one of the countries that is gonna benefit the most from Iran-U.S relationship and lifting of sanctions from Iran, is India.It's good for your country in every way possible.We can gaurantee your energy security while there is no pressure on India from the west.Chabahar port can develop much faster than today,and India or even Far East countries like Malaysia,Thailand,Philippines,Indonesia and others can have a fast and secure access to Central Asian markets and even Europe and ME countries.The most damage on Iran-India relations comes from the western sanctions and pressure.
Who says only because they are Pashtuns,they support a primitive and violent school of thought like Taliban who sees for example,girl's education as a great and unforgivable sin? If what you are saying is true and majority of Afghans support them and want to re-experience all the difficulties,murders and violence they endured in 90s, then I would feel sad for them.But I don't think what you are saying is true.Maybe an Afghan member, like @
Sher Malang can comment on this.