At the end of Neolithic age there were no any countries on the Earth as well as humans outside Middle East did not invent writing yet. -> We cannot know what names they used for places they lived in.
As for inhabitants of modern Russian territory, hundreds of Neolithic settlements of 3000 BC were discovered. For example, Upper Volga culture, Lyalovskaya culture, Volosovo culture, Dniepr-Dvina culture, Samara culture, Pribelskaya culture, Agidel culture etc... - all over modern Russia. Those names were given by scientists (by names of rivers, modern towns etc... where these settlements were found).
Scythia
Scythian, member of a nomadic people originally ofIranian stock who migrated from Central Asia to southern Russia in the 8th and 7th centuries bce.
Persian's
There was no one name. It was scattered with many different groups of nomadic peoples.
Nothing
