Clearly, the submarine’s propulsion system was not working for a period of time, but we don’t know why. Incidents involving nuclear submarines, especially ones operated by Russia/Soviet Union, have long been a cause of potential international concern
The Ukrainian Ministry of Defence blames Russia for the attack, saying that the country is intentionally conducting information operations against Ukraine.
According to the Russian military, HMS Defender was told to change course, and when it failed to do so, a Russian border patrol ship sent several warning shots. The UK government rejected Russia's account of the incident and denied that any warning shots had been fired.
