After 9.11, the United States increased its demand for burden-sharing on the part of allies such as Japan and South Korea. In East Asia, the importance of the US presence in both of those countries as a deterrence mechanism was reinforced as political and military tensions grew due to factors including the intensification of China-Japan rivalry and associated nationalisms, territorial disputes and unsettled historical issues. Yet, even under these circumstances, anti-base movements also grew. At the root of these movements lay the impact of the bases on people's lives. Anti-base movements in Japan and Korea develop around people's everyday lives. Residents seek mitigation of the burdens of foreign military forces and bases. The case of Iwakuni City (Yamaguchi Prefecture, Japan) is one example.