Joe Biden basically said that he was going to attack it in so many words.

I say: fuck it.

That's the US engaging in an Act Of War that has brought direct and tangible harm to Germans. The US engaged in an Act Of War against a NATO ally.

Throw the US out of NATO.

I think, even as an American, that's a bad thing to happen to us; but I can't say that it wouldn't be entirely warranted.