I wonder if there's still a way of getting into mainland Russia (not the Kaliningrad exclave) from the EU by rail.

• Travelling via Ukraine is out of question due to multiple reasons.
• Travelling via Belarus is out of question, because 3rd party nationals are not allowed to cross the Belarus-Russia land border.
• AFAIK, services from Finland have been suspended

How about Estonia and Latvia? Are there any passenger rail services crossing the border into Russia? Thx for updates.