My understanding Germany made a huge mistake in connecting with Russia. Swift and or petroleum product sanctions would just crush germany. This is going to be a key reason. Given the context, no real major war had ever happened in a long time. Perhaps Germany was connecting in order to build relationships. Which may actually be a long term benefit for everyone. In the long run maybe preventing further conflict.

Germany did halt Nordstream 2, which wasnt doing anything yet, but I dont believe they did anything else yesterday? Most likely they fear retribution.