Mossad/Israel at least:

> Documents supplied to the Hamburg court indicated that Hanning was the go-between with the Israelis. According to media reports, these Hamburg court documents contained clues to his other business activity with classified BND information.

https://www.irishtimes.com/world/europe/2026/10/06/former-ge...

Where there’s smoke there’s fire, and western intelligence precedent (eg russian “illegals program”) is that when it’s Russia/China, it’s named.

So the omission here itself (and denial of Russia) is some additional speculative information, on top of his already known ties to Mossad.