History of the Global Arms Race

From the Trojan Horse to a Star Wars Missile Defense system, human societies have continually pushed for stronger, smarter, more intimidating weapons of war. We look at the diplomatic and defensive reasons for weapon proliferation worldwide as the U.S. and N. Korea face off in a dispute over building more nuclear weapons. Laura?s guest is William Martel, a professor at the Naval War College www.nwc.navy.mil