Earlier quoted context omitted.
Common theme I've heard here (Kyiv, Ukraine) is that this sabotage is in Putin's direct interest. There are rumours of political infighting among Russia's leaders and that there are several factions trying to seize power, however since there is no clear winner, those guys need powerful allies, EU being a very important one. The idea is that Europe really wants to buy Russian gas, but not from Putin, so if Russia some…
Why is Putin direct interest destroy a source of income and leverage to the country!?!? Now Germany can buy gas from 2 sources: Ukraine and USA. This explanation makes no sense to me.
The logic isn't unreasonable. Nordstream is very clearly NOT a source of income, currently. But it could be, if Putin were deposed. Now the Russian gas interests are stuck with Putin, they don't win anything (in the near term) via a coup.
Add to that that clandestine adventurism like this is very much Putin's MO and not the USA's (we do our adventurism with giant flags and 24/7 news coverage), and... it seems the most reasonable guess.
Really the US doesn't have that much interest here, certainly not enough to provoke further escalation. If Ukraine were to straight up fall to Russia, we'd deal with it. That's what we all assumed was going to happen back in the spring anyway.