Norh Korea's missle testing?

Question

No small country can test a long range missile without it being aimed at another country which could be considered an act of aggression. I wonder how feasible it would be to declare a world-wide neutral zone where any country could aim long range missles for testing. It would be better than what there is now, just aiming it where ever to test it.

Answer 1

That is assuming the people firing the missiles obey and honor agreements.