National security and prosperity depend on the safekeeping of a global system of mutually supporting networks of commerce, communication, and governance. The global commons (outer space, international water, international airspace, and cyberspace) are assets outside of national jurisdiction that serve as essential conduits for these networks. Securing freedom of use of the global commons is therefore fundamental to safeguarding the global system. This report analysis the threats to all of these and offers initiatives and frameworks for minimizing vulnerabilities and securing freedom of action in the commons while recognizing that global security must be underscored by international cooperation and agreements.

Disruptions in the commons /Scott Jasper and Paul Giarra -- Strategic trends and drivers / Jeffrey Becker -- The changing security environment / Dick Bedford -- Indistinct legal regimes / James Kraska -- Maritime security / Jeff Kline -- Cyberspace control / Steven H. McPherson and Glenn Zimmerman -- Space assurance / Michael Manor and Kurt Neuman -- Ballistic missile defense / Will Dossel -- Air superiority / Mort Rolleston -- Sea control / Thomas Bowditch -- Leadership for complexity and adaptability / Sandra M. Martínez -- Advanced technology enablers / Marco Fiorello and Donald McSwain -- Integrated training systems / Scott Jasper and Scott Moreland.