Today, common concerns are driving East Asians to collaborate in ways unimaginable a few years ago. In particular, recent developments in the financial, energy, health, anti-transnational crime, and other sectors suggest that "functional cooperation" - technical collaboration based on common interests or issues - is on the rise among East Asian states. Collaboration under Anarchy brings together ten leading experts who assess the prospects for deeper and more extensive cooperation in various "non-traditional" sectors of security, as well as the views of several regional powers and of ASEAN on functional cooperation within and by their region. Their analyses suggest that functional cooperation, while not without difficulties, could however prove indispensible to realizing East Asia's collective aspirations for prosperity, security and order.