Kim Jong-nam death: poison dose so high he died in '15 to 20 minutes'

Ministers believe half brother of North Korean leader was killed with more than 10mg of UN classified VX nerve agentThe dose of poison given to North Korean ruler Kim Jong-un’s half brother was so high it killed him “within 15 to 20 minutes”, Malaysia’s health minister has said. Kim Jong-nam died on 13 February at Kuala Lumpur airport from being poisoned with VX nerve agent, a banned chemical substance classified by the UN as a weapon of mass destruction.Related: Kim Jong