Selig Harrison, a journalist who covered Asian affairs for The Washington Post and later helped shape them as a scholar, author and advocate of diplomacy with North Korea, where he made 11 trips over four decades as a rare guest of the country’s reclusive regime, died Dec. 30 in Camden, Maine. He was 89. Mr. Harrison was hired by The Post in 1962 as bureau chief in New Delhi and swiftly became known as one of the sharpest foreign correspondents in the region.