In July 1993, President Bill Clinton visited the Republic of Korea as part of a tour in Northeast Asia. Looking across the Demilitarized Zone that separates North and South Korea, President Clinton described the terrain he saw as one of the scariest places on earth. Now, well into the first decade of the 21st century and several years after the end of the Cold War, President Clinton's observation remains accurate. In fact, the argument can be made that the Korean peninsula is even more dangerous than it was in 1993. How did this happen when, throughout most of its more than 2,000 year history, Korea was one of the most homogeneous countries among the world's nation states, with its people sharing a common language and ethnicity? Since the end of World War II and primarily through the actions of external powers, the Korean peninsula has been divided-with North and South Korea engaged in a competition for the heart and soul of the Korean nation and international legitimacy. Some experts have referred to the peninsula as one of the last vestiges of the Cold War.

People, geography, and history -- Political development in South Korea -- Kim dynasty in North Korea -- North Korean nuclear weapon programs -- U.S. responses to the North Korean programs -- Evolving security environment on the Korean peninsula.