Wikipedia mentions that it is contested if it is intentional or not.

Personaly for me, intentionality doesn't seem far fetched, given gulags, forced relocations to siberia without supplies and liberal presentation of history/facts (ussr guides said that kaliningrad is russian from olden times).

also storage of natural gas is problematic.

Europe sees a lot of parallels with what happend right before ww2 (germany taking a bite here and there; testing responses; extending influence and gathering resources)

couple of months of sanctions. Not sure how many russians will want to endure. Of course putin will try to turn it into some patriotic narative, but truth will spread. Holding ukrain will not be simple. People there have tasted freedom. It will not be so easy to feed government news to them.

there is also fact that german ex cancelor (schroeder) is at russian gas and oil companies now (i.e. russia made good friends to make right decisions)

Once it is done, possibly much much much later, somebody may stumble upon it and use it in some creative (and unforseen) ways for other research.

On the other hand if you give any probability to alien existence, then this is very much practical already in the search for them.

Maybe you have data on:

- total installed storage capacity as percentage of daily electricity usage (preferably 95th-percentile daily usage). Hopefully this percentage increases every year.

- how often should we expect to replace batteries. Wikipedia says 400-1200 cycles. Does this mean that whole world storage capacity must be replaced every 400-1200 days?