What right has the US got to tell Germany where to get its gas?

No right whatsoever.

You best join the forces of the next empire to decline, just like Rome did.

That's where your misguided allegiances are.

Intra-NATO tensions were worsening for nearly two decades before Trump took office.

When asked which side their country should support in a conflict between the United States and Russia, the majority of respondents in all 14 European Union countries surveyed said “neither.”