Not to mention that even back in the day, the Soviets were doing end runs around it. Such as when they transferred SS-23 Spider systems to the (nominal) control of East Germany and some other Warsaw Pact countries. When that little ruse came out it was a major embarrassment to the US State Department, who had been assuring Congress, as well as Reagan and then Bush, that the Soviets were in compliance with the treaty despite warnings to the contrary from various intelligence agencies.