As the title says. What would have happened had there been no NPT, no INF, no ABM treaty, etc.? Can Détente still happen?
If so, how does it happen*? If not, why?
*I personally am undecided on whether Détente could have happened in a non-NPT via a "peace from a position of strength" scenario rather than the OTL fear of a nuclear holocaust due to the 1962 Cuban Missile Crisis. Can somebody care to educate me about this?
*And of course, China can be off the hook, since IOTL it was not a party to the talks.