In this May 4, 2001, photo, a man believed to be Kim Jong Nam, right, the eldest son of then North Korean leader Kim Jong Il, walks out of a police van to board a plane to Beijing at Narita international airport in Narita, northeast of Tokyo. Kim was assassinated at an airport in Kuala Lumpur, telling medical workers before he died that he had been attacked with a chemical spray a Malaysian official said Tuesday.  (Kyodo News via AP)

Malaysia: Nerve agent killed Kim Jong Nam

Kim sought help from airport staff but fell into convulsions and died on the way to the hospital within two hours of the attack, police said…