North Korea's Kim Jong-il dies

Enigmatic North Korean leader Kim Jong-il has died, state television reported Monday.  A North Korean TV broadcaster said the 69-year-old leader died Saturday due to "overwork" while "dedicating his life to the people."

North Korea's official KCNA news agency said Kim suffered "great mental and physical strain" while on a train. Kim, who had been treated for "cardiac and cerebrovascular diseases for a long period," suffered a heart attack on Saturday and couldn't be saved despite the use of "every possible first-aid measure," according to the agency.

Ali Velshi talks to Jim Walsh, International Security Analyst at the Massachusetts Institute of Technology, to discuss what's next for North Korea after Kim's death.