In this Oct. 22, 2015, file photo, North Korean Son Kwon Geun, center, weeps with his South Korean relatives as he bids farewell after the Separated Family Reunion meeting at Diamond Mountain resort in North Korea. (Korea Pool Photo/AP, File)

Reunions of families separated since the Korean War will resume in August as part of fast-moving engagement between North and South Korea that has already led to breakthroughs including a military hotline linking the two countries, Red Cross envoys said Friday after meetings in North Korea.

The reunions will take place over six days beginning Aug. 20, the first such event since 2015 to bring together families divided for nearly seven decades. About 100 people from each side will take part in the gatherings on North Korea’s Mount Kumgang, a resort about 10 miles north of the demilitarized zone between the two Koreas.

Setting a clear plan for the reunions had been a priority of the government of South Korea’s president, Moon Jae-in. He accompanied his mother to a past reunion in 2004, when he was serving in a previous government that sought engagement with North Korea.

But a joint statement by national Red Cross delegations from North and South Korea did not touch on other sensitive issues that have complicated family reunion attempts in recent years.

Those issues include North Korea’s demand for the return of 12 North Korean restaurant workers who left China in 2016 and resettled in South Korea. Seoul claims that the women willingly defected. South Korea, meanwhile, seeks the return of six people detained in the North.

In this June 30, 2006, file photo, South Korean Choi Gye-wol, left, in a bus bids a farewell to her grandson Kim Chol Bong, center, as her son Kim Young Nam looks on before she returns to her home after the Separated Family Reunion meeting at Diamond Mountain in North Korea. (Ahn Jong-won/Yonhap/AP, File)

Nearly 20,000 Koreans have taken part in 20 rounds of reunions held between the countries since 2000, but plans have been shelved in recent years by the South to protest nuclear and missile tests by the regime of Kim Jong Un. At the same time, the urgency for the reunions has grown as the generation that endured the 1950-53 Korean War dwindles.

The talks between the two Koreas parallel exchanges between the United States and North Korea, capped by a June 12 summit in Singapore, where President Trump and Kim held talks for nearly five hours. The two Koreas have started a dialogue on a range of initiatives that include opening high-level military channels and planning more joint sports teams.