So to keep score, in the last year we've seen cables sabotaged between Finland and Germany, Lithuania and Sweden, Estonia and Sweden, Estonia and Finland. Any others I missed? You might say it's too early to call it sabotage, but the earliest two cable incidents were exactly the same, so it's hardly a coincidence at this point.
Russia warned that they were going to do this last week. I think it's pretty reasonable to conclude that 1) this was sabotage and 2) it was Russia.
Hey, hold your horses. Biden also threatened to blow up the Nord-Stream 2 pipeline, yet after the sabotage, everybody said "it was Russia". Now about this incident, to be consistent, I'm inclined to think it was the Americans.
I believe at this point we have a pretty good guess as to who sabotaged the pipeline, and it wasn't the US.
No we do not. Saying it with "confidence" and "authority" doesn't make true either.
The same article you link only quote "speculation" on the role of Ukraine. There is no detailed evidence of the people involved (and if some certain other agencies are involved in this).