A Brief History - Takeshima Invasion by ROK: During the period of January 18, 1952 (date of unilateral establishment of Syngman Rhee Line) to June 22, 1965 (signing date of Treaty on Basic Relations between Japan and the Republic of Korea), 328 Japanese fishing vessels were captured and 3,929 fishermen were abducted by South Korea. And,44 Japanese fishermen were brutally murdered by South Korea. Besides, South Korea used abducted fishermen as a bargaining chip for negotiating with Japan on the Treaty.