I want to know the answer to the following question:
What is another term for Western Iran?
All the background I'm provided with is that "Sogdian's close relative Yaghnobi barely survives in a small area of the Zarafshan valley east of Samarkand, and Saka as Ossetic in the Caucasus, which is the sole remnant of the once predominant Scythian languages in Eastern Europe proper and large parts of the North Caucasus.". Is that enough to answer the question?
Answer: no