The Wonsan Kalma resort was opened in a grand ceremony last month by North Korea's leader, Kim Jong Un, who hailed it as a "world-class tourist and cultural destination". The details of how this resort was built have been shrouded in secrecy in a country largely closed to the outside world.

Top South Korean, U.S. and Japanese military officers are urging North Korea to cease all unlawful activities that threaten regional security, as the three nations fly advanced warplanes for a joint exercise in a show of force against the North.

North Korean leader Kim Jong Un said he wants the luxury resort on the eastern seacoast to become a "world destination," but the country has been reluctant to allow in foreign tourists.

A North Korean defector is filing civil and criminal charges against the country's leader Kim Jong Un for abuses she faced while detained in the country. Choi Min-kyung fled the North to China in 1997 but was forcibly repatriated in 2008. She said she was sexually abused and tortured after her return.

Washington has said the treatment of Glavprodukt, the only U.S. company Moscow has seized, will influence a planned reset of U.S.-Russia relations.

The 51st Fighter Wing said the upgraded F-16s will bring "unparalleled multi-role versatility and superior operational range" to U.S. forces in South Korea.

The fishermen’s boats had drifted into South Korean waters, officials said. The South’s new president has been trying to improve ties with North Korea.

North Korea is developing chemical weapons to use on the battlefield in preparation for full-scale war, according to a high-level official within the regime.