Might be shocking to some, but not all of Russia is one people. There are multiple interests there among country's leaders. And one such interest: to get rid off Putin's regime quickly. One way of doing this is to prevent any notion of "restorable" economic relationships with Europe under Putin. Without Gas, who needs Putin's Russia...
A prediction: we will see more of such actions in the coming months, leading to the winter
A prediction: we will see more of such actions in the coming months, leading to the winter