Kim Eui-keum, a spokesman for South Korean President Moon Jae-in, told a press briefing on Monday that it would be a bit difficult for the summit to be held in early September, considering the conditions. He may have been referring to North Korea’s National Day on September 9, marking the 70th anniversary of the founding of North Korea.

The summit, should it go ahead, will be the third between Moon and Kim this year and the fifth meeting between the leaders of the two Koreas in history. This would  also be President Moon’s first visit to Pyongyang in a decade. Leaders of the two countries are still discussing preparations for the summit.

South Korea and North Korea have agreed to more toward modernizing roads between Pyongyang and Kaesong as part of a broader plan to link the transport systems of the two countries.