They shouldn’t be paying the US anything. The aid wasn’t given contingent on natural resources going the other way and so that should be the starting point.
I think Europe will need to quickly appreciate that it cannot trust anything this US administration says, included in which is Article 5, and should deal with accordingly.
We are at the start of 4 years of virtually no relationship politically with the US. I say 4, no doubt the constitution will be changed and it leads to 8.
How this effects NATO and our special relationship before his tenure ends I’ve no idea but I fear it’s going to be incredibly bad.
