I've watched that clip, and quite frankly, looking at the entire context of the press conference and the tone of voice of the answer, it's clear to me that he w

I've watched that clip, and quite frankly, looking at the entire context of the press conference and the tone of voice of the answer, it's clear to me that he wasn't in the middle of planning any attempts to sabotage the pipeline. Recall that this is a press conference essentially announcing that Germany agreed NordStream 2 will not open if Russia openly invades Ukraine, that Biden is (by this time) sitting on very reliable evidence saying that Russia is planning to imminently openly invade Ukraine, and the reporter is asking "okay, what if Russia doesn't openly invade Ukraine?", whereupon the answer is effectively "that's not gonna happen."