North Korea has released three US detainees in the country, according to media reports, and it meets some of President Donald Trump demands for Pyongyang to demonstrate sincerity before its upcoming US summit. Kim Dong-cheol, Kim Sang-deok, and Kim Hak-seong — three US citizens detained in North Korea for years — have been released from a suspected labor camp and given health treatment and ideological education in Pyongyang. The news follows Trump's hawkish National Security Adviser, John Bolton, calling for the release of the detainees as a way for North Korea to demonstrate its sincerity in talks. North Korea has...