Would Britain have proceeded with the N3 battleships without the interwar naval treaties?
Short answerProbably, and the larger lesson is that treaties require practical adjustment mechanisms that governments can use without publicly admitting political failure.
NotesBritain probably would have continued with the N3 battleships if the treaty system had not interrupted construction. The Washington and London naval treaties made too little allowance for strategic change. Escalator and withdrawal provisions existed, but invoking them could look like an admission that the original settlement had failed. Political leaders who saw themselves as masters of the diplomatic system therefore had an incentive to postpone adjustment. Durable arms control needs a face-saving route for reasonable change before accumulated pressure breaks the agreement.