Let’s Walk This Through: If North Korea Launches An ICBM, Then… How good is America’s homeland ballistic-missile defense? If a war broke out tomorrow, could it stop an attack from North Korea? http://www.defenseone.com/ideas/2017/10/us-missile-defense-north-korea-icbm/141866/?oref=d-topstory cdn.defenseone.com/media/img/upload/2017/10/18/nk_icbm_AP_17151074854001/defense-large.jpg