Thats not the point of deals - merely convincing your prospective trade partner that a deal is unfair to you at that time is a hard sell.
The UK signed the deal knowing the consequences of it, why would another country sign a trade deal with you knowing that you will not follow the terms due to your countries internal politics ?
The UK signed the deal knowing the consequences of it, why would another country sign a trade deal with you knowing that you will not follow the terms due to your countries internal politics ?