Sea, air, space, and cyberspace constitute the global commons – those areas or dimensions of the world no one state controls but that act as the connective tissue that binds the international system together.
The 21st century will see the rise of new great powers and increasingly influential non-state actors. Ninety percent of global trade travels by sea, and all advanced nations are at least somewhat reliant on a global communications system of internet servers and orbiting satellites. Since World War II, the United States essentially has been the guarantor of the global commons, ensuring freedom of the seas and the ability of individuals to traverse much of the world. This long era of uncontested dominance of the global commons may be coming to an end. A recent string of high-profile examples – including China’s successful anti-satellite missile test and spacewalk, India’s unmanned lunar mission and naval posture, Russia’s naval and air posturing in a changing Arctic region, and the rise in both offensive cyberspace operations and piracy in key littoral environments – all point to a future in which the United States will need to deal with increased tension and complexity throughout the global commons.
In recognition of the increasingly central role of stability throughout the global commons, the Center for a New American Security has launched a one-year effort designed to bring a range of perspectives to bear on this emerging 21st century challenge. Led by Abe Denmark and Michael Zubrow, the Contested Commons study team will focus on how challenges within the global commons will impact America’s national security strategy and defense priorities. A range of written products will be released throughout 2009, culminating in a major edited volume to be published next autumn.