Swedish investigator suspects state actor involvement in Nord Stream pipeline attacks.

The involvement of a state actor in the Nord Stream pipeline attacks last year is the "absolute main scenario," according to the Swedish prosecutor investigating the incident. The blasts occurred in the economic zones of Sweden and Denmark, and both countries say the explosions were deliberate, but have yet to determine who was responsible. The investigation continues, and while no conclusion has been drawn, there have been a number of theories as to who blew up the pipelines and how.