Comment by upofadown

Canadian here...

The world already know this. Having an agreement with the USA is a lot like having an agreement with Darth Vader. The terms of the deal can be altered unexpectedly at any time.

That doesn't mean that such agreements are worthless. They can still be of value to the counties making them. It is just that those countries have to take into account the unreliability of the entity they are making the deal with. Deals with the USA involve a lot of forecasting.