Europe is essentially the vassals of the US Empire, so any pro-European stance is almost always in the context of perpetuating imperialism or trying to gain more leverage to no longer be vassals of empire. It's impirtant to recognize that, in a conflict between Russia and the US Empire, the US Empire winning continues to fuel imperialism, while Russia winning results in a dramatically changed geopolitical field. In the context of bringing about socialism globally, the US Empire is by far the largest obstacle.