What happened to the Nord Stream 1 and 2 gas pipelines in the Baltic Sea? EU Commission President Ursula von der Leyen considers sabotage to be the possible cause of the leaks in the raw material pipes and has threatened the possible perpetrators with severe consequences. "Any intentional disruption of active European energy infrastructure is unacceptable and will result in the strongest possible response," von der Leyen tweeted. She spoke to the Danish Prime Minister Mette Frederiksen about the "sabotage action". "It is of the utmost importance to investigate the incidents now and get complete clarity on what happened and the reasons why.

A total of three leaks were discovered in one of the tubes of Nord Stream 2 and in both tubes of the Nord Stream 1 pipeline after an initial drop in pressure on Monday night. As early as Tuesday, Poland, Sweden, Denmark and Russia considered an attack on the European gas infrastructure to be the cause of the unprecedented damage to both pipelines. From the point of view of German security circles, there was much to be said for sabotage. If it was an attack, only a state actor would come into question given the effort, it said. Although gas is currently not being delivered through any of the pipelines, the gas price has risen due to the uncertainty.

Swedish Prime Minister Magdalena Andersson said on Tuesday evening that the information was far from complete, but two explosions had been identified that caused three leaks. Based on Swedish and Danish information, the conclusion is that it was probably an intentional act. "So it's probably a question of sabotage," she said.

The Danish government made a similar statement. The authorities came to the unequivocal assessment that these were intentional acts and not an accident, said Prime Minister Frederiksen in the evening. Several explosions were observed within a short period of time. There is still no information about who is behind it. The incidents occurred in international waters in the exclusive economic zones of Denmark and Sweden off the Baltic Sea island of Bornholm.

According to a spokesman, the government in Moscow did not want to rule out any variant. The operator of Nord Stream 2 was skeptical: the lines were laid in such a way that it is highly unlikely that several lines would be damaged at the same time, for example by a single ship accident.

The CDU defense expert Roderich Kiesewetter meanwhile assumes that the leaks are due to an act of sabotage by Russia. "According to everything we know, the leaks in the Nord Stream I and II pipelines can almost only be a targeted, state-initiated act of sabotage," Kiesewetter told the editorial network Germany. From a security policy perspective, such an act of sabotage serves as a deterrent and threat. "It is therefore likely that Russia is trying in this way to stir up uncertainty in the European population on the one hand and to point out once again at state level the possibility of an attack on critical infrastructure on the other."

Russia has already shown in the past that the Nord Stream pipelines are being used as a tool and energy as a weapon against Germany, said the CDU politician. "Therefore, such an act of sabotage would also fit into Russia's hybrid approach, which is characterized by state terrorism."

The chairwoman of the defense committee of the Bundestag, the FDP politician Marie-Agnes Strack-Zimmermann, suspects Russia to be behind the possible act of sabotage. "The longer and more brutal the Russian attack on Ukraine, the greater the risk of such unrestrained attacks," Strack-Zimmermann told RND. "It cannot be ruled out that they will be directed by Russia in order to shake our markets."

German and Danish authorities pointed out that the incidents had no impact on the gas supply, as the pipelines had not recently been used for gas imports. While gas was still flowing from Russia to Germany via Nord Stream 1 until a few weeks ago - albeit with reduced capacity - the approval for Nord Stream 2 was put on hold by the federal government shortly before the Russian attack on Ukraine. After that, she had ruled out use because of the war.