Durham, NC - One day into the Olympics and already one flag controversy.  On Wednesday, London organizers made the first flub of the games by showing a video with the South Korean national flag when the North Korean women's soccer team was being introduced.

The North Korean team was so outraged it walked off the field and threatened not to compete.  After lengthy negotiations the team returned and won the game.

Flag and anthem controversies are not new to the Olympics or any international event, athletic or political.  Kazakhstan's shooting team was once greeted not by its national anthem, but a recording used in the Borat movie.  But is it as easy as it seems to get the right flag?  So while we wait to see how Duke divers Abby Johnston and Nick McCrory perform, take a test below and see how well you know the flags of 10 countries that are expected to take at least one medal.  The answers are below. (No cheating by checking out the flags at the Fuqua School!)

Answers -- Clockwise from top left: Jamaica, France, Saudi Arabia, Armenia, Brazil, Australia, New Zealand, Gabon, Kenya, North Korea. Flags from Wikimedia Commons.