This book is coming from Project II U.S. Strategy to the Korean Peninsula of IKUPD PROJECT: U.S. Security Strategy to Asia. This project is mainly dealing with issues of Korea-U.S. relations, Korea’s vision and North Korean matters in variable aspects and its prospects in U.S. strategy. Nuclear potential as the utmost proof advanced military techniques in Asia has been challenged U.S. security strategy to Asia that U.S. should effectively manage the uprising atmosphere and such a vivid symptom to overwhelm U.S. power in Asia. Especially, Northeast Asia is the right place to reveal major power’s military ventures where China and Russia are still dreaming of world power. Besides, North Korea’s nuclear challenge will never stop to test U.S. security strategy to Asia in danger. This book is striving to find out effective U.S. strategy how to keep up its influence and role in Asia through the main countries’ ventures and such relationships as regional powers, such as China, Russia, Japan, and Korea. First of all, it will work out as a positive platform to upgrade the U.S. and Korea alliance so that Korea explores its potential in Asia.