North Korean leader Kim Jong-Un has chided his soldiers, telling them to be ready for “impending conflict with the United States,” Pyongyang media reported on Saturday as satellites showed a nuclear test could be near. The report comes as US President Barack Obama finishes up a two-day visit to South Korea, where he warned the North it faced tougher sanctions if the underground detonation went ahead. It also comes after Pyongyang claimed it had been holding a young American for two weeks. More