Kim Jong Nam, the half-brother of the current leader of North Korea, is dead. But while that much is clear, there remains significant uncertainty about just who was behind his murder and what caused him to be killed in broad daylight.

Having lived in self-imposed exile for many years and seldom visited the DPRK, it’s unclear whether his murder will have much impact on the current political situation in North Korea, despite his close blood relationship to Kim Jong Un.