The digital world has brought about a new type of clear and present danger: cyberwar. Since information technology and the internet have developed to such an extent that they have become a major element of national power, cyberwar has become the drumbeat of the day as nation-states are arming themselves for the cyber battlespace. Many states are not only conducting cyber espionage, cyber reconnaissance and probing missions; they are creating offensive cyberwar capabilities, developing national strategies, and engaging in cyber attacks with alarming frequency. The aim of this paper is to examine broad cyberwarfare issues: what cyberwar means, what it entails, and whether threats can deter it or defense can mitigate its effects.