Just knew about the long history of Islam in Korea.
I thought Islam and Korea were not having much contact.. but I found out that around 50 years ago.. at the War of South and North Korea, Turkey, known with its Islamic population, came in hand sending its troops. The troops struggled to defend the south Korea, they managed to help also in some humanitarian aspect such as education. They built Ankara School for the war orphans
Because of the religious spirits of Turkish Armies.. Koreans were impressed with Islam, and some of them declared Syahadah, and Korean Muslim Federation was established in 1960s.
Some masjids (mosques) built.. the first one was in Itaewon..
here is video of more in detailed history of Islam in Korea :
copyright of Islam in Korea (Korean Muslim) http://www.facebook.com/pages/Islam-in-Korea-Korean-Muslim/176701999026960