In addition, both countries aspired to hold atomic weapons, which in the case of the Korean People's Democratic Republic came actual in 2004, while Iran has so far been stopped by pressures, sanctions and negotiations and method problems, although it is not known whether it will make its own atomic weapons in the future.
While a ballistic rocket is simply a comparatively easy weapon to construct, the defence against it is rather complicated. Rocket ballistic rocket is 1 that doesn't request any aerodynamic forces to fly, which means no wings like an airplane. The appropriate velocity and load-bearing force is given only by a rocket engine that produces a thrust greater than its weight. In this way, ballistic missiles can besides fly outside the atmosphere, where there is no air and there is no way to produce a carrier aerodynamic force on wings. At the same time, the thrust exceeding the weight of the rocket allows it to make very advanced speeds, which is just specified a large difficulty in intercepting.
