From Andrew Krepinevich’s article in the July/August issue of Foreign Affairs:
U.S. military operations are very dependent on commercial land-based information infrastructure. If cyberattacks inflicted substantial damage on them or disrupted them, not only would great economic turmoil ensue; much of the military capability of the United States could prove to be the modern equivalent of the Maginot Line…It may be that a defensive [cyber]strategy cannot be successfully pursued and that the United States will be forced to develop its own cyberweapons and rely on deterring the worst sorts of cyberattacks. In short, the potential for a surprise of the worst sort in this realm remains a real possibility.