I think there may be an Epstein-Russian connection. He did visit with Russian President Putin at least once, and he obtained Russian and other Eastern European women for his operations from the Russian Mafia, which is under the control of the KGB/FSB.
He probably had no loyalties of any kind. He was a free-lance black-mailer, and if a power wanted state secrets, he could get them from his blackmailees, if the power could pay. He was what’s known in that trade as a “source,” same as Pollard, many cartel heads and members, and other unsavory characters as well. They are the ones to whom spy agencies go for information.