Foreign relations of South Korea
On January 18, 1952 The first president of South Korea Syngman Rhee declared that the vicinity of Dokdo was a territory of South Korea (Syngman Rhee line). Subsequently, some 3,000 Japanese fishermen who conducted fishery operations in this vicinity were captured. This incident, called the Dai Ichi Daihoumaru Ship case strained relations between South Korea and Japan.
Roh Tae-woo
In response, Roh made a speech on June 29 promising a wide program of reforms. Chief among them were a new, more democratic constitution and popular election of the president. In the election, the two leading opposition figures, Kim Young-sam and Kim Dae-jung (both of whom later became presidents), were unable to overcome their differences and split the vote, in spite of the first female presidential candidate withdrawing from the race to support Kim Young-sam against Roh. This enabled Roh to win by a narrow margin and become the country's first cleanly elected president on December 16, 1987 and was inaugurated as President on February 25, 1988.