Sources:
Arkin, William M., et al. “U.S. May Launch Strike if North Korea Reaches For Nuclear Trigger.”
NBC News. 13 March 2017.
Park, Ju-min, and Kim, Jack. “North Korea Test-Fires Missile Into Sea Ahead of Trump-Xi Summit.”
Reuters. 5 April 2017.
Martina, Michael, and Wong, Sue-Lin. China warns against force as North Korea prepares celebration
Reuters. 13 April 2017.