Would a cyberwar be possible on a global scale?

A few months back, as part of my post-grad studies, I had to look into the viability of electronic warfare on a global scale. This is part one of many posts that will revisit that work and expand on it where applicable and reduce parts of it where. Abstract Information warfare is currently fought on two planes: first is the legal and diplomatic plane where Russia and China on one side, and United States and the Western world on the other are trying to pass globally acceptable resolutions on cyber arms control and the definition of, and use of information warfare.