Actually, the results have been very high. Here is a quick quiz: What is the perfect hit rate of our fielded missile defense systems? This includes PATRIOT, THAAD, and SM-2/3? 50%. Yep, so already you see how this is misleading. In 2003 Iraq fired 23 ballistic missiles at Coalition forces. Of those, 9 were engaged (14 were determined to not be a thread and landed in uninhabited areas). Of the 9 missiles engaged, 18 PATRIOT missiles were fired. That is because by US doctrine, 2 missiles at a minimum are fired at every inbound threat. So a perfect hit record is only a 50% intercept rate. Be careful what you claim. Actually, we do. First, the satellites used to detect launches in Russia and China also detect launches in NK. And we also have long range RADAR in Japan which can detect the launches. Not to exclude the AEGIS arrays on the ships in the area, and AWAC birds in flight. And once it gets high enough in it's trajectory, our RADAR systems in Alaska and other Pacific sites will pick it up. Generally, a FLASH is sent within 2 minutes of a missile launch. It is not the detecting that takes so long normally, it is determining where it is going to impact. That generally means waiting until it has completed it's boost phase, so we can examine altitude, speed and bearing to determine where it will most likely come down. Wrong. Dead wrong. It all depends on launch location, flight path, and target. Our main missile defense system against ICBMs is actually the US Navy. Both the Arleigh Burke class Destroyers and Ticonderoga class Cruisers both carry the SM-3 anti-missile system. The only reason they have not been used so far was that it was hoped that NK would stop their launches. But rumors are now out that the next launches will not be ignored by the Navy. Once the missile gets high enough, the AEGIS array will detect it. Then it is only a matter of the state of readiness of the crew, flight path in relation to the ship, and ROE SOP if it will be intercepted or not.