nuclear weapons. because kim jong un has spoken quite explicitly about tactical-nuclear weapons. these are the kind of nuclear weapons that are designed to be put on small artillery rockets and smaller, short-range ballistic missiles. reporter: the next test expected at any time may approximate smaller than the last from 2017. tremors which could be felt in neighboring china and south korea. tests which surely attract international attention but kim jong un also has a domestic audience. to cover up the economic failure, he need to show up another achievement. i think a weapon program that he can be very proud of. reporter: time wise, kim jong un may be in the most ideal testing environment in his more than ten years in power. the world s attention is on russia s invasion of ukraine and the chances of russia or china side being the u.s. and the united nations security council to sanction north korea are next to zero. there is just no chance of any kind of u.n. security
given the shape of this warhead, it is likely to be a mirv, an icbm with multiple warheads. and also it was fired on the normal trajectory, it can hit anywhere on the continental united states. reporter: and tactical nuclear weapons. because kim jong un has spoken quite explicitly about tactical-nuclear weapons. these are the kind of nuclear weapons that are designed to be put on small artillery rockets and smaller, short-range ballistic missiles. reporter: the next test expected at any time may approximate smaller than the last from 2017. tremors which could be felt in neighboring china and south korea. tests which surely attract international attention but kim jong un also has a domestic audience. to cover up the economic failure, he need to show up another achievement. i think a weapon program that he can be very proud of. reporter: time wise, kim jong