They have been doing that since the cold war, they support American enemies whenever they can.
Russia decided to shun the West and restart the Cold War, its up to them if they want to be enemies of the West and in this case there is no need to put the other cheek.
What is very stupid however is try to appease your enemies when you clearly have the upper hand, these people don't see American compromises as attempts for peace but as weakness.
If this continues don't be surprised if shit gets worse over time.