But the fact is that Pliny does say there was a people descended from a semitic speaking culture residing North of the Black Sea and these people had close relationships with the Israelites. They're Germans. They ended up settling in southern Germany. The Israelites settled in northern Germany and then went on west later. Americans with German names mostly are descended from Germans who lived in northern Germany. There used to be a website with good evidence to support this but it's gone now so this is something I can't document and is merely a discussion point, anyone reading this can take it or leave it.
Some German tribes, according to their own traditions, for a time lived to the East in steppe country, yes. Volkerwanderung, or something similar. While out there, they had wars with Sarmatians, Cimmerians, and other steppe types. That's about as close as any of them ever got to being Assyrian and it's not good enough.
If they were warring with the Cimmerians and were from the deeper steppes, they sound like Israelite tribes, maybe a subgroup of Scythians. I'd never heard of Assyrians venturing too far onto the steppes.