Cameroonians act out the historic (and sometimes humorous) tradition of judging a king. Workers in Hawaii are preserving an ancestral tradition of harvesting salt, but you can't buy what they produce. In Syria, the U.S. and Israel have carried out airstrikes, and we're explaining why. And in Brazil, an animal you might not expect is helping train dogs with behavioral problems. A truly international show awaits on The World from A to Z!