South Korea has gotten some less-than-desirable feedback in its campaign to raise the country's international profile: many foreigners can't tell South Korea apart from its nuke-loving northern neighbor.

Over 30% of respondents in a government-sponsored survey of 6,000 people in about a dozen countries said they couldn't "easily distinguish between South Korea and North Korea when [they] encounter news, articles, movies, websites or other content about Korea." Those who said they could tell the two countries apart...