It can be true for certain populations of eastern Slavs.
Analysis done in nMonte3 R script that uses Monte Carlo technique
Baltic_BA is in an individual who lived in eastern Baltic (Lithuania?) during Bronze Age (1800-500 BC). Russians of Smolensk live near eastern border of Belarus.
Closest single item distance to Baltic_BA sample. A large number of ethnicities were compared to Baltic_BA.
Latvian Lithuanian Belarusian Russian_Smolensk
1.830117 2.271316 2.944395 3.041177
Estonian Russian_Voronez Russian_Tver Russian_Kursk
3.051821 3.285615 3.300027 3.319758