I think you all don't know a lot more about the ancient history of South Asia. The fact is those Iranians (persians) tried to invade India before the time of Alexander but couldn't suceed as they couldn't come across the river Sindhu. But, before those persians had famous empire, way before they were able to counter the Greek civilization, the Indian sub-continent had inumerous small kingdoms but most of them had only one religion. The history of hinduism goes as far as 5 thousand years before. Whereas it hasn't been more than 1500 years when Islam was founded, Christianity 2005 years and Buddhism 2500+ years. So, the so called Iranian aryans were here only after they were converted to muslim. The first successful attack from the west except from the Alexander was from those muslim tribes in or around 1200 AD. So there is no way it can be proved or called that the people who wrote one of the most complex and longest epics like Vedas and Purans 2800 (For Rigved) years ago are descendent from some jerks with iron swords in their blood thirsty hands with the only motto of conversion of faith. And by the way, I agree that historian believe the word Aryan was started from Iran but note the point that another ancient name of South Asia was also Aryabrat. And Rajasthanis and Punjabis are not aryans, they are the Huns and Sythians migrated from Central Asia. They are similar to present day Hungarians.