Park believes 'format governs contents': aide

South Korean President Park Geun-hye has long believed it is important to get things done under the right format, a senior aide said Wednesday, after a disagreement over the level of chief delegates led to the cancellation of rare high-level talks with North Korea.

The two sides had been scheduled to open two days of meetings in Seoul on Wednesday to discuss resuming joint economic projects and other issues, but the talks were called off at the last minute after they failed to reach agreement over the level of officials to represent each side.

It would have been the first high-level meeting between the sides in six years.