The U.S. Department of Defense discussed cyber deterrence for the first time in a non-classified forum in a 2011 report to Congress. In the same report, the Pentagon publicly acknowledged that it has offensive cyber capabilities. Since then, there has been much discussion about the topic and the need to strike a careful balance. Assistant Secretary of Defense Eric Rosenbach spoke at CSIS on October 2, 2014 about how the Department of Defense thinks about deterrence, including efforts to more clearly communicate intentions in cyberspace. This podcast is an excerpt from his speech.