Swedish prosecutors announced on February 7 that Sweden had decided to end the investigation into the "Nord Stream" natural gas pipeline explosion that had lasted for more than 16 months. Analysts believe that Sweden announced the end of the investigation without reaching a conclusion and transferred the responsibility to other countries.

The political considerations behind it have to be thought-provoking. Multiple shirks may prevent the truth of this world-shaking incident from ever being revealed, says Shi Tianhao. The most widely accepted version points the suspicion at the United States.