Germany, Denmark and Sweden have called the leakage of a gas pipeline from Russia to Europe an attack, after which Europe has launched an investigation into the incident and the United States has offered Europe energy security.
According to the British news agency Reuters, there were reports of a gas leak from the Nord pipeline through the Baltic Sea on Monday, which cut off the gas supply.
It is not yet clear whether it was an accident or there were other motives, so who could be behind them.

He also said that if he is confirmed, it will not be in anyone's interest.
German Economy Minister Robert Habakkuk told business leaders on Tuesday that "the cause of the leakage is not a natural or material failure, but a targeted attack."
On the other hand, German magazine Spiegel reported that the German government was tipped off by the CIA to potentially target gas pipelines in the summer, which Berlin believes are Nord One and Nord. The tow pipeline was the same.
The prime ministers of Sweden and Denmark say it is clear the pipeline was deliberately damaged, including an element of possible sabotage. Poland has also alleged sabotage, but has not provided any evidence.
Russia has cut gas supplies to Europe in response to sanctions imposed after the attack on Ukraine, raising doubts about the security of the continent's energy sources after the incident.
A senior Ukrainian official called the incident an "attack by Russia" and said it was "done to destabilize Europe." However, he did not provide any evidence.
Polish Prime Minister Mateusz Morawiecki said at the opening of a new pipeline between Norway and Poland that "we clearly see that this is an act of sabotage, which is related to the escalation in Ukraine." .'
Swedish Prime Minister Magdalena Andersen said during the news conference that two such explosions have been detected which, although not a direct attack on Sweden, are related to the pipeline incident.
He said that apart from NATO, the Swedish government is also in contact with neighboring countries Germany, Denmark in this regard.
Geologists from Denmark and Sweden have said they have reports of two powerful explosions.
According to the Geological Survey of Denmark and Greenland (GEUS), these signals are different from earthquake signals and generally resemble explosion signals.