Dual citizenship in South Korea

From Freepedia

The Government of the Republic of Korea does not permit dual citizenship after the age of 21. American citizens of Korean descent who hold dual citizenship under South Korean law and work or study in South Korea are usually compelled by the Republic of Korea to choose one or the other nationality soon after reaching that age.

In addition, South Korean men over the age of 18, including American citizens of Korean descent, are subject to compulsory military service. A dual national may not be allowed to abandon his Republicof Korea nationality until he finishes his military service, or has received a special exemption from military service. There have been several instances in which young American men of Korean descent, who were born and lived all of their lives in the United States, arrived in the ROK for a tourist visit only to find themselves drafted into the South Korean army.