Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The physical division of Korea in 1945 initiated a long history of political tension between North Korea and South Korea that escalated in 1950 when North Korean forces invaded the territory of South Korea. Despite tentative steps to restore harmony in the Korean Peninsula, outbreaks of aggression are still documented. Learn more about political and diplomatic relations as well as military interactions between South Korea and North Korea in this book.