Contested Commons is an edited volume featuring five chapters and a capstone piece on the future of American power in the sea, air, space and cyberspace. Authors include CNAS Fellow Abraham M. Denmark, Dr. James Mulvenon, Frank Hoffman, CNAS Military Fellow Lt Col Kelly Martin (USAF), Oliver Fritz, Eric Sterner, Dr. Greg Rattray, Chris Evans, Jason Healey, and CNAS Senior Fellow Robert D. Kaplan.Chapters Future of American Power in a Multipolar WorldBy Abraham Denmark and Dr. James MulvenonThe Maritime Commons in the neo-Mahanian EraBy Frank HoffmanSustaining the Air CommonsBy Lt Col Kelly Martin (USAF) and Oliver FritzBeyond the Stalemate in the Space CommonsBy Eric SternerAmerican Security in the Cyber CommonsBy Dr. Greg Rattray, Chris Evans and Jason HealeyPower Plays in the Indian The Maritime Commons in the 21st CenturyBy Robert D. Kaplan