I have no doubt anyone north of Ted Kaczynski in operational capacity could blow up the pipeline, which certainly includes Poland. But you need not just to blow

I have no doubt anyone north of Ted Kaczynski in operational capacity could blow up the pipeline, which certainly includes Poland. But you need not just to blow up a pipeline, but definitely not get caught. It was a hostile action primarily against western European nations Poland has good relationships with. The public finding out would not go well.