> ...neither side has anywhere near enough missiles to completely disable their opponents.

Try the US/Iran war for size then.

I'm not sure what you mean by "completely disable their opponents" - there may not be a country on earth with enough munitions to do this against a competent and resilient adversary - the Vietnam war comes to mind where the US still lost after dropping triple the bombs (by tonnage) of what the entire allied forces dropped during WWII across all theaters