A man looks at illustration board showing the portraits of the 46 sailors killed when their naval ship “Cheonan,” was sunken, in Seoul, South Korea, Monday, March 25, 2013. An explosion ripped apart the 1,200-ton warship, killing 46 sailors near the maritime border with North Korea in 2010. A photo exhibition is being held here to mark three years from the incident. <AP Photo/NEWSis/Lee Jin-man>
