With China now South Korea's number one trading partner and destination for foreign investment and tourism, what are the implications for politics and security in East Asia? Scott Snyder explores the transformation of the Sino - South Korean relationship since the early 1990s. Snyder considers the strategic significance of recent developments in China's relationship with both North and South Korea and also assesses the likely consequences of those developments for US and Japanese influence in the region. His meticulous study lends important context to critical debates regarding China''s foreign policy, Northeast Asian security, and international relations more broadly. This title examines China's redefined political and economic relations with North and South Korea, as well as what this implies for US and Japanese influence in Northeast Asia.