Discussions on North Korea's military arsenal -nuclear and conventional- has been headline news, particularly with threats coming from the Hermit Kingdom of missile launches towards Guam.

North Korea's tight borders make it tough to know great detail on what capabilities they really have.

What about a biological weapons program? What do we know and not know?

Associate professor in the Schar School of Policy and Government's biodefense program, at George Mason University, and the author of Barriers to Bioweapons: The Challenges of Expertise and Organization for Weapons Development, Sonia Ben Ouagrham-Gormley, PhD joined me for a look at what is actually known about a North Korea bioweapon program.