Context: RussianInvasionOfUkraine2022

It seems highly likely that the US was behind the sabotage of the Nordstream Pipeline (which brings gas from Russia to Germany)

The US has long since criticised, particularly Germany, for getting into bed with Russia and becoming dependent on Russian oil (and therefore more economically tied to it). The US has long wanted the pipeline stopped / abandoned. And has made threatening noises.

In 2022 the pipeline was blown up. The likely US motivation was to ensure Germany remained part of the coalition of Western countries supporting Ukraine in light of the Russian invasion. Control of gas that Germany depended on was a lever Russia could pull to threaten Germany if it decided to, for example, give more arms or military support to Ukraine.