>Yeah I just don't see a technological solution to nuclear explosives. There is nothing, except cost, preventing the US from building enough Aegis/Aegis Ashore

>Yeah I just don't see a technological solution to nuclear explosives. There is nothing, except cost, preventing the US from building enough Aegis/Aegis Ashore/THAAD launchers to defend the entire US. (See my full comment elsewhere.) >Even without rockets at all I can imagine alternative ways a nation could get nuclear explosives into all the major cities of another country if it was life-or-death. No such alternative delivery method is 100% guaranteed to get through to the target as ICBMs were (until recently). There is always the risk that a ship carrying nukes is intercepted, that a weapon smuggled into the enemy's territory is detected, that counterintelligence will identify agents before they can act, etc. In a MAD scenario, nuclear weapons have to be 100% effective, barring the odd technical failure. Otherwise the enemy will respond in kind.