In an extremely unusual case, South Korea deported two North Korean fishermen on Thursday after determining they had killed 16 other crew members on their boat and then fled to South Korean waters, Seoul officials said. South Korea has a policy of accepting North Koreans who want to resettle in the South to avoid political oppression and poverty at home. This week’s deportations were the first South Korea has carried out of any North Korean who came to the South since the end of the 1950-53 Korean War, according to Seoul’s Unification Ministry, which deals with North Korean affairs.