Two undersea cables in Baltic Sea disrupted

And also the cable between Lithuania and Sweden:

https://www.theguardian.com/world/2024/nov/18/telecoms-cable...

And also Ireland escorted a Russian spy ship away from their cables:

https://www.theguardian.com/world/2024/nov/16/russian-spy-sh...

A disruption in communications can mean only one thing: invasion.

yes. What Russia does currently is probing and testing - what it takes to disrupt all the necessary cables simultaneously to create communication breakdown and a lot of chaos, what resources and time it takes to repair (and thus planning the options on blocking those repair resources, etc.) It takes tanks half-a-day to cross the Baltic states to reach the sea. That is the time Russia wants to buy. Once Russian forces are already in Riga, Tallinn, Vilnus, the NATO will have a decision to make on whether to bomb the Russian forces already placed by that time among the Baltic states population.

This would be more concerning if Russia had any tanks left.

Are you suggesting Russia has a full invasion force they’re not using in Ukraine? Or to liberate their own occupied territory?

Today: no In 5-10 years: probably

Maybe, but that's assuming their war economy lasts for that long, that they still have people to run those things, etc. Besides, Europe was caught with its proverbial pants down; in 5-10 years, they will (should) have their military up to speed again, with fresher, better equipped and better trained people than Russia has. The border countries have all upgraded their defenses already, and if they invade a NATO country they suddenly have all of Europe and - if still applicable at the time - the US on their back.

There are no scenarios in which Russia can have any significant victories. The only thing they maybe have is nukes, but nobody wins if those are deployed.

You forgot one thing. Nato has zero combat experience. Its entire economy is not suitable for warfare. Will take a lot longer than 5 years.