Kim Jong-nam
Until 2001, it was assumed that Kim Jong-il's eventual heir would be his eldest son, Kim Jong-nam, whose mother was Song Hye-rim. But in May 2001, Kim Jong-nam was at Narita International Airport, Japan, travelling on a forged Dominican Republic passport. He was held and then deported to the People's Republic of China. The incident caused Kim Jong-il to cancel a planned visit to China because of the embarrassment to both countries. As a result of this incident, Kim Jong-nam fell from favour.