Michael Swaine and I have just written an article for the China Leadership Monitor that examines China’s assertiveness in the Yellow, East, and South China Seas. We assess whether, to what degree, and in what ways the PRC has become more assertive along its maritime periphery in recent years. It also assesses the external and domestic forces motivating Beijing to become more or less assertive over time and the prospects for Chinese assertiveness with regard to maritime sovereignty issues in the future.