The Wall Street Journal reported the information.By December, Italian judges will decide whether to extradite Ukrainian Serhii Kuznetsov, suspected of the undermining, to Germany.The publication notes that any court hearing is likely to further strain relations between Ukraine and Germany, Kyiv's largest financial donor and supplier of the most sought-after military equipment, especially air defense systems.Political pressure is also mounting on the German leader, Chancellor Friedrich Merz, although those close to him said they would be able to manage the domestic fallout despite opposition attempts to cut funding to Ukraine.According to them, the German public has already become accustomed to the idea that Kyiv is behind the attack, partly thanks to publications in The Wall Street Journal. However, high-ranking officials suggest that it would have been easier for Germany to navigate the diplomatic consequences of the explosions if detectives had not built such an effective case against Ukraine.German investigators suspect a group of seven Ukrainians, led by then-Commander-in-Chief Valerii Zaluzhnyi, may be behind the 2022 Nord Stream pipeline explosions.