I could imagine a US based law that banned the sale of any durable goods produced by a company headquartered in a country that still got more than 5% of its power from lignite coal due to a strong climate commitment. That's tailored basically only to impact Germany. Is that fair?
Of course that means the US will no longer be a global superpower, but the US can freely choose that.
I never understood American magical thinking that blames Europe for US military spending. In the end, if you want to cut military spending, you can.
Regardless, you're the hegemon. I don't accept that you don't benefit from that position.