Jean Lee, director of the Korea program at the Wilson Center, told PBS News that the state of the North Korea leader's health could remain a secret for weeks, if not forever, after rumours Kim Jong-un died from coronavirus. Ms Lee warned that if the rumours turned out to be true, instability within North Korea could threaten the stability of the entire world, given the country has continued to develop nuclear weapons. She said: “It was such a frenzy of speculations this week and at this point we still don’t know. The state of the leader’s health is something that is a closely guarded secret and certainly, if he is as ill as they say, that would be something that they would keep a close hold on.