It was a bloody act of war staged against the EU.
An act of strategic scale sabotage against multi-billion investment of the EU based companies, and a direct blow into the EU industrial potential.
Perpetrators are clearly Anglosaxon origin, no matter if that was done by yours of the Muricans directly. The cause is clear and was clearly stated by the US administration for a very long time. Mrs. Rise was kind enough to tell that openly in 2012 if I remember.
US struggle to take a bite from the EU cake was admitted by Putin back in 2007.
The fact that EU rulers didn't respond to that is the final proof that we are being administrated by a band of thugs and criminals who care shit about well being of not one nation, but 600+ mln people living on the entire continent, being tens of nations.
And I really believe that what we face now, was already well described by the adviser for the US/GER relation in Kohl administration in an interview for Der Spiegel. He stated openly, that the US will push their interests at any cost, including terrorizing, bribing, blackmailing or finally killing the opponents. No matter if they are considered allies or not.
We face cancer that will burn the whole world we live in, if not opposed and stopped.