The leader of South Korea\'s main opposition party visited the country\'s easternmost islets of Dokdo Tuesday in a symbolic move against Japan\'s repeated claims to the rocky outcroppings. Dokdo, which lies closer to South Korea in the body of water that divides the Korean Peninsula and Japan, has long been a thorn in relations between the two countries as Tokyo continues to lay claim to the islets in the country\'s school textbooks and government reports