Mike Mochizuki, Associate Dean of the Elliott School of International Affairs at George Washington University and holds the Japan-US Relations Chair in Memory of Gaston Sigur, offers his insights on the 2010 collision incident between Japan’s patrol ship and China’s fishery boat. He discusses whether Beijing over-reached its hand and whether Tokyo successfully played its card in handling the diplomatic crisis. He also explores the security implications of the incident for the U.S.-Japan alliance.