Because Epstein had ties to Israel and not to Russia. There might be a similar ring run by Russia as well, who knows.
I thought this was interesting, from Al Jazeera to boot:
Political Reactions: While critics and unverified intelligence memos pointed to the deep relationship as a sign of state ties, current Israeli Prime Minister Benjamin Netanyahu publicly dismissed the notion, stating on social media that Epstein's close ties to Barak (a political opponent of Netanyahu) actually "proves the opposite" of Epstein working for the Israeli state.