Last June, the Navy divers [from the U.S. Navy’s Diving and Salvage Center], operating under the cover of a widely publicized mid-summer NATO exercise known as BALTOPS 22, planted the remotely triggered explosives that, three months later, destroyed three of the four Nord Stream pipelines, according to a source with direct knowledge of the operational planning.

Now, with Russian troops massing on the Ukrainian border and the bloodiest war in Europe since 1945 looming, President Joseph Biden saw the pipelines as a vehicle for Vladimir Putin to weaponize natural gas for his political and territorial ambitions.

Asked for comment, Adrienne Watson, a White House spokesperson, said in an email, "This is false and complete fiction." Tammy Thorp, a spokesperson for the Central Intelligence Agency, similarly wrote: "This claim is completely and utterly false."

Biden’s decision to sabotage the pipelines came after more than nine months of highly secret back and forth debate inside Washington’s national security community about how to best achieve that goal. For much of that time, the issue was not whether to do the mission, but how to get it done with no overt clue as to who was responsible.