A world where governments covertly spy on each other (even in violation of promises/treaties) is likely a nicer, safer, more peaceful world than the alternative

A world where governments covertly spy on each other (even in violation of promises/treaties) is likely a nicer, safer, more peaceful world than the alternative. It's a form state-to-state transparency, helping states independently confirm either that another state's other statements and commitments are trustworthy, or not. State-vs-state spying makes bluffs, threats, and deception in international relations relatively harder, and helps prevent destabilizing surprises or betrayals. And I suspect all the major states understand this, and know any surface agreement not to covertly seek extra information (especially signals information) really just means, "we'll all just be really sneaky about it".