That’s how it works… Overwhelming defences with decoys.
Assume you have a very effective anti ballistic missile system with a 90 % kill rate - which is unheard of. Your system intercepts 90 out of every 100 bombs sent your way.
Now if you were the US president ,would you be confident to go to war with Korea because you have a system that can shoot down 90 % of all nuclear bombs Jung Un sends your way ?
What is even worse is that ballistic missiles now have AI that constantly plots/changes flight paths through defense shields, interceptors and radars. They also have electronic jammers and decoys. An example is this one from China.
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All these advancement in missile technology is making the world a very small place and making a lot of military assets irrelevant. An example is Russian Navy admiral saying Russian Navy priority isn’t building new carriers. Its rehabilitation of older nuclear ballistic submarines, building new ones, building more corvettes, frigates and destroyers that can field its new hypersonic Zircon missiles that can destroy any air, land and sea target from a continent away.