https://en.wikipedia.org/wiki/Nord_Stream_2 ^ a lot of different parties, including the US didn't want this to happen.
How many times has Russias the past 30 years weaponized its gas pipelines? Speak to Moldova, or Estonia, or Ukraine. https://www.cfr.org/in-brief/russia-using-energy-weapon-agai...
I'm not saying the Russians did it, I personally think it was a maintenance accident.