Service personnel and civilians lay floral baskets, bouquets and flowers before the statues of President Kim Il Sung and leader Kim Jong Il on the 68th founding anniversary of the DPRK in this undated photo released by North Korea's Korean Central News Agency (KCNA) September 9, 2016. (Photo by Reuters/KCNA)





People lay flowers before the statues of President Kim Il Sung and leader Kim Jong Il on the 68th founding anniversary of the DPRK in this undated photo released by North Korea's Korean Central News Agency (KCNA) September 9, 2016. (Photo by Reuters/KCNA)





Service personnel and civilians lay flowers before the statues of President Kim Il Sung and leader Kim Jong Il on the 68th founding anniversary of the DPRK in this undated photo released by North Korea's Korean Central News Agency (KCNA) September 9, 2016. (Photo by Reuters/KCNA)





People lay flowers before the statues of President Kim Il Sung and leader Kim Jong Il on the 68th founding anniversary of the DPRK in this undated photo released by North Korea's Korean Central News Agency (KCNA) September 9, 2016. (Photo by Reuters/KCNA)





Wreaths were laid before the Revolutionary Martyrs Cemetery on Mt. Taesong, the Patriotic Martyrs Cemetery in Sinmi-ri and the Fatherland Liberation War Martyrs Cemetery on Friday, the 68th founding anniversary of the DPRK. in this photo released by North Korea's Korean Central News Agency (KCNA) September 9, 2016. (Photo by Reuters/KCNA)





A man and a woman have their pictures taken as people who arrived with them wait in the background at the embankment of the Yalu River, near the North Korean town of Sinuiju, opposite Dandong in China's Liaoning province, September 10, 2016. (Photo by Thomas Peter/Reuters)





A North Korean soldier sits at the bank of the Yalu River, near the North Korean town of Sinuiju, opposite Dandong in China's Liaoning province, September 10, 2016. (Photo by Thomas Peter/Reuters)





North Korean soldiers keep watch at the bank of the Yalu River, near the North Korean town of Sinuiju, opposite Dandong in China's Liaoning province, September 10, 2016. (Photo by Thomas Peter/Reuters)





North Korean soldiers keep watch at the bank of the Yalu River, near the North Korean town of Sinuiju, opposite Dandong in China's Liaoning province, September 10, 2016. (Photo by Thomas Peter/Reuters)





North Korean soldiers keep watch at the bank of the Yalu River, near the North Korean town of Sinuiju, opposite Dandong in China's Liaoning province, September 10, 2016. (Photo by Thomas Peter/Reuters)





A North Korean soldier keeps watch at the bank of the Yalu River, near the North Korean town of Sinuiju, opposite Dandong in China's Liaoning province, September 10, 2016. (Photo by Thomas Peter/Reuters)





A North Korean soldier keeps watch at the bank of the Yalu River, near the North Korean town of Sinuiju, opposite Dandong in China's Liaoning province, September 10, 2016. (Photo by Thomas Peter/Reuters)





A North Korean soldier and two men sit at the bank of the Yalu River, near the North Korean town of Sinuiju, opposite Dandong in China's Liaoning province, September 10, 2016. (Photo by Thomas Peter/Reuters)





A North Korean soldier sits at the bank of the Yalu River, near the North Korean town of Sinuiju, opposite Dandong in China's Liaoning province, September 10, 2016. (Photo by Thomas Peter/Reuters)





A man cycles along the bank of the Yalu River, outside the North Korean town of Sinuiju, opposite Dandong in China's Liaoning province, September 10, 2016. (Photo by Thomas Peter/Reuters)





A woman walks through the Yalu River, near the North Korean town of Sinuiju, opposite Dandong in China's Liaoning province, September 10, 2016. (Photo by Thomas Peter/Reuters)





A man sits in front of a cornfield at the bank of the Yalu River, near the North Korean town of Sinuiju, opposite Dandong in China's Liaoning province, September 10, 2016. (Photo by Thomas Peter/Reuters)





A woman cycles along the bank of the Yalu River, outside the North Korean town of Sinuiju, opposite Dandong in China's Liaoning province, September 10, 2016. (Photo by Thomas Peter/Reuters)





People wait for a boat at the bank of the Yalu River, outside the North Korean town of Sinuiju, opposite Dandong in China's Liaoning province, September 11, 2016. (Photo by Thomas Peter/Reuters)





People wait for a boat at the bank of the Yalu River, outside the North Korean town of Sinuiju, opposite Dandong in China's Liaoning province, September 11, 2016. (Photo by Thomas Peter/Reuters)





A man pours water onto a cart of an ox-wagon at the bank of the Yalu River, outside the North Korean town of Sinuiju, opposite Dandong in China's Liaoning province, September 11, 2016. (Photo by Thomas Peter/Reuters)





A North Korean soldier squats near man who is fishing in the Yalu River, outside the North Korean town of Sinuiju, opposite Dandong in China's Liaoning province, September 11, 2016. (Photo by Thomas Peter/Reuters)





A soldier and a child walk up steps at the bank of the Yalu River, outside the North Korean town of Sinuiju, opposite Dandong in China's Liaoning province, September 11, 2016. (Photo by Thomas Peter/Reuters)





A woman washes shoes at the bank of the Yalu River, outside the North Korean town of Sinuiju, opposite Dandong in China's Liaoning province, September 11, 2016. (Photo by Thomas Peter/Reuters)





North Koreans line up outside the customs office in China's Dandong, Liaoning province, as to cross Friedship Bridge to North Korea's Sinuiju September 12, 2016. (Photo by Thomas Peter/Reuters)





North Koreans enter the customs office in China's Dandong, Liaoning province, to cross Friendship Bridge to North Korea's Sinuiju September 12, 2016. (Photo by Thomas Peter/Reuters)





Men look out of a the window of a train that travels across Friendship Bridge from North Korea to China's Dandong, Liaoning province, September 12, 2016. (Photo by Thomas Peter/Reuters)





North Korean flags are flown between apartment blocks in downtown Pyongyang, North Korea, Wednesday, August 24, 2016. (Photo by Dita Alangkara/AP Photo)





Motorists drive in Pyongyang, North Korea, Friday, September 9, 2016. North Korea on Friday conducted its fifth atomic test, producing its biggest-ever explosive yield, South Korean officials said after monitors detected unusual seismic activity near the North's northeastern nuclear test site. The seismic activity comes on the 68th anniversary of the founding of North Korea's government and just days after world leaders gathered in China for the G-20 economic summit. (Photo by Jon Chol Jin/AP Photo)





Residents cycle and walk in Pyongyang, North Korea, Friday, September 9, 2016. (Photo by Jon Chol Jin/AP Photo)





North Koreans use a pedestrian bridge to cross a road in downtown Pyongyang, North Korea, Wednesday, August 24, 2016. (Photo by Dita Alangkara/AP Photo)





A North Korean schoolboy runs with a soccer ball as he plays with his friends near the pier on Tuesday, June 21, 2016, in Wonsan, North Korea. Wonsan, about 200 kilometers (125 miles) from Pyongyang, is a port city located in Kangwon Province, North Korea along the eastern side of the Korean Peninsula, and was one of the cities chosen to be developed into a summer destination for locals as well as tourists. (Photo by Wong Maye-E/AP Photo)





North Koreans watch a news report regarding a nuclear test on a large screen outside the Pyongyang Station in Pyongyang, North Korea, Friday, September 9, 2016. North Korea said Friday it conducted a “higher level” nuclear warhead test explosion, which it trumpeted as finally allowing it to build “at will” an array of stronger, smaller and lighter nuclear weapons. (Photo by Jon Chol Jin/AP Photo)





North Koreans enjoy beer and snacks during Taedonggang Beer Festival in Pyongyang, North Korea, Sunday, August 21, 2016. The festival, the first of its kind in the country, was held as a promotional event for the locally brewed beer. Korean signs in the background read “Our country is the best”. (Photo by Dita Alangkara/AP Photo)





School children play in a band in Pyongyang, North Korea, Friday, August 26, 2016. (Photo by Dita Alangkara/AP Photo)





Children practice soccer at Pyongyang International Football School in Pyongyang, North Korea, Wednesday, August 24, 2016. North Korea has poured funds into the development and training of promising athletes over the past several years in an effort to fulfill one of leader Kim Jong Un's primary goals to become a country be reckoned with on the global sports stage. (Photo by Dita Alangkara/AP Photo)





The reflection of a North Korean national flag atop of a building seen on the rear window of a car as a woman walks past by at Kim Il Sung Square in Pyongyang, North Korea, Monday, August 22, 2016. (Photo by Dita Alangkara/AP Photo)





North Korean men fish off a pier leading to Jangdok Island on Tuesday, June 21, 2016, in Wonsan, North Korea. Wonsan, about 125 miles from Pyongyang, is a port city located in Kangwon Province, North Korea along the eastern side of the Korean Peninsula and was one of the cities chosen to be developed into a summer destination for locals as well as tourists (Photo by Wong Maye-E/AP Photo)





This handout photo taken on September 8, 2016 and released on September 13, 2016 by UNICEF DPRK shows mobilised villagers as they attempt to repair roads from Chongjing to Musan and Yonsa counties in North Hamyong province. Rescue workers struggled to reach North Korea's flood-ravaged communities September 13 as the Red Cross warned of a “major and complex diaster” which has killed scores and left tens of thousands in urgent need of help. At least 133 people have been killed and hundreds more are still missing after devastating floods hit the country's north, leaving tens of thousands homeless and destitute, with the risk of disease now looming. (Photo by Murat Sahin/AFP Photo)