South Korea has 6000 cases or thereabouts. North Korea has a fairly porous border with China (well, by N Korean standards). They must have cases but we won't know. I'd imagine a lot.
Supposedly Russia has single figures cases. I don't believe that for a second. Iran was lying through it's teeth. Somalia doesn't have the infrastructure to count I'd suppose.
What does the WHO and CDC and all those organisations do to estimate, manage, assist those states that lie, don't release figures, and have very vulnerable populations with limited healthcare?