North Korean leader Kim Jong Un said there was 'no reason' not to hold a high-level summit with neighboring South Korea, speaking in a New Year's address broadcast by state media on Thursday. 'If South Korean authorities sincerely want to improve relations between North and South Korea through talks, we can resume stalled high-level meetings,' he said. 'If the atmosphere and environment is there, there is no reason not to hold a high-level summit (with South Korea),' Kim said, speaking in what appeared to be a pre-recorded message. South Korea proposed on Monday to resume stalled inter-Korean talks with North Korea in January to cover issues including reunions for families separated by the 1950-53 Korean War.