Jeffrey Fowle, an American who had been detained in North Korea, spoke to The Associated Press last month in Pyongyang. Fowle was released by North Korean authorities and flown back to the U.S. on Tuesday. Wong Maye-E/AP hide caption

itoggle caption Wong Maye-E/AP

A photo released Monday by the Rodong Sinmun, newspaper of the ruling Workers' Party, shows North Korean leader Kim Jong Un walking with a cane as he visits a residential area in Pyongyang. Rodong Sinmun/EPA/LANDOV hide caption

itoggle caption Rodong Sinmun/EPA/LANDOV

North Korea's National Defense Commission Vice Chairman Hwang Pyong So, middle, waves as the country's athletes march at the end of the Asian Games. He's flanked by Workers Party Secretary Choe Ryong Hae, right, and South Korea's Kim Kwan-jin, left, national security adviser to South Korea's president. Dita Alangkara/AP hide caption

itoggle caption Dita Alangkara/AP

Matthew Miller leaves after his trial at North Korea's Supreme Court on Sunday. The court sentenced the U.S. citizen to six years of hard labor for entering the country illegally and trying to commit espionage. Kim Kwang Hyon/AP hide caption

itoggle caption Kim Kwang Hyon/AP

Kenneth Bae, an American tour guide and missionary serving a 15-year sentence in North Korea, speaks to The Associated Press on Monday. Bae and two other detained Americans urged the U.S. to send a high-level emissary to secure their release. Wong Maye-E/AP hide caption

itoggle caption Wong Maye-E/AP

Pope Francis shakes hands with upon his Thursdayarrival in Seoul. The Pontiff arrived in South Korea on the first papal visit to the Asian nation in a quarter century. During his five-day visit, Francis plans to beatify 124 Korean martyrs and encourage a vibrant and growing local church seen as a model for the future of Catholicism. Gregorio Borgia/AP hide caption

itoggle caption Gregorio Borgia/AP

Chinese President Xi Jinping (right) and South Korean President Park Geun-hye greet children waving the two countries' national flags at the presidential Blue House in Seoul on Thursday. Xi has yet to visit North Korea. Kim Hong-ji/Reuters/Landov hide caption

itoggle caption Kim Hong-ji/Reuters/Landov