Do you think one country alone could/would shoot that many nukes at once as to completely overwhelm all air defense systems?
Um... yes? This is the publicly stated strategy. This has been the specter of global nuclear war for the last 70 years. MAD? Mutually Assured Destruction? have you never heard these terms? The official strategy through the entire cold war was "If anyone launches even a single nuke, everybody launches ALL the nukes." This strategy was (in part) a result from the development of viable missile defense systems post WWII
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