The islands in the Sea of Japan are controlled by South Korea, but Japan contests its Asian neighbor’s claims. The dispute pivots around a speck on the Olympic torch-relay map that depicts the islands, known neutrally as the Liancourt Rocks, in the same color as the rest of Japan. It isn’t visible to the naked eye, but South Korean protesters pointed to zoomed-in versions that show the dot. Seoul called in a senior Japanese diplomat on Tuesday to formally protest the map, and three students were arrested for burning the “Rising Sun” Japanese flag in protest in the South Korean capital.