washington — Former U.S. President Jimmy Carter has a complex legacy on the Korean Peninsula, former U.S. officials say, including the vital role he played in defusing a crisis between the United States and North Korea in 1994. Thomas Hubbard, former U.S. ambassador to South Korea from 2001 to 2004, told VOA Korean by phone Wednesday that Carter’s interventions in North Korea significantly lowered tensions, despite somewhat negative reactions from President Bill Clinton’s administration. “His initial involvement in the early 1990s when he went to North Korea, met with Kim Il Sung, he opened an opportunity that lowered the chances