Let's speak to hazel smith, a north korea analyst who regularly advises the us and uk governments on north korea issues. how long has this been happening, that north koreans have been supplying these kinds of weapons? well, the evidence is coming from the united — well, the evidence is coming from the united states intelligence agencies and the south korean intelligence agencies in particular. and of— intelligence agencies in particular. and of course, they don't publicise their sources. but in terms of the circumstantial evidence that we can see, the _ circumstantial evidence that we can ...