Anti-missile systems are not 100% reliable. You're still trying to hit a bullet with another bullet even with the help of satellite and computer guidance. We're going to have to offer North Korea some sory of peace deal to replace the decades old armistice we signed to pause the Korean War. Everyone must remember we are still at war with North Korea so it is no surprise that they continue to treat us as an enemy. We should be finding a way to offer them a peace treaty instead of keep trying to force their leadership into a smaller and smaller corner.