The U.S. engaged in an act of war not just against its putative enemy—Russia—but also against its supposed ally—Germany. From Caitlin Johnstone at caitlinjohnstone.com:

My sources corroborate Seymour Hersh’s report that the US was behind the Nord Stream pipeline sabotage. (My sources are logic, common sense, and public statements by US government officials.)
If Putin and senior Russian officials had said what Biden and senior US officials have been saying about how much they hate the Nord Stream pipelines and how great it is that they were bombed, every member of the western political/media class would blame Russia for the bombing, and we would never hear the end of it.
FLASHBACK: BIDEN:“If Russia invades — that means tanks or troops crossing the border of Ukraine — then there will be no longer a Nord Stream 2. We will bring an end to it”
REPORTER: “How will you do that?”
BIDEN: “I promise you, we’ll be able to do it.”pic.twitter.com/XGmFV4c9Qm
— Benny Johnson (@bennyjohnson) February 9, 2023
According to @SecBlinken, the Nord Stream pipeline bombing “offers tremendous strategic opportunity for the years to come.” Too bad that this tremendous opportunity for DC bureaucrats will come at the expense of everyone else, especially this coming winter. pic.twitter.com/T2eacQUuBF
— Aaron Maté (@aaronjmate) October 1, 2022
At a Senate hearing, top US diplomat Victoria Nuland celebrated the Nord Stream 2 pipeline bombing:
“Senator Cruz, like you, I am, and I think the administration is, very gratified to know that Nord Stream 2 is now, as you like to say, a hunk of metal at the bottom of the sea.” pic.twitter.com/KS5OM4N165
— Aaron Maté (@aaronjmate) January 27, 2023
Pompeo says US will ‘do everything’ to stop Nord Stream 2 project https://t.co/gnARiIAUhi pic.twitter.com/VZg6HIWrFM
— American Military News (@AmerMilNews) August 1, 2020
Russia would stand nothing to gain by bombing its own pipeline whose gas flow it could control on its own end, while US officials are openly acknowledging that the US benefits from it directly. It’s just so silly how imperial spinmeisters are falling all over themselves to dismiss a claim they all privately know is true because it’s so glaringly obvious.