The defense chiefs of North and South Korea began a rare meeting Tuesday aimed at easing tension across their countries' disputed sea border. South Korean Defense Minister Kim Jang-soo arrived in Pyongyang Tuesday on a direct flight from Seoul for three days of talks with his North Korean counterpart Kim Il Chol _ the first defense ministerial talks between the Koreas in seven years. This week's talks are aimed at fleshing out agreements to foster peace and cooperation between the Koreas signed by South Korean President Roh Moo-hyun and North Korean leader Kim Jong Il last month, at only the second-ever summit between the countries, the Associated Press reported.