US
High-level inter-Korean talks are scheduled to pave way for summit between Kim and South Korean President Moon Jae-in
Visit by Kim would put Beijing firmly back at the centre of the diplomatic equation
North Korean state media have not yet directly mentioned the summits
Official's hawkish views previously fanned fear US wants base in Kabul with Pakistani nuclear weapons in mind
Bolton has much knowledge on the issues regarding the Korean peninsula
Trump stuns the world by accepting invitation to meet Kim
News of summit is latest step in a quickening diplomatic detente that has seen North, South Korea exchange envoys too
South Korean official visiting Washington to brief US allies about talks with North Korean leader in Pyongyang
North wants to talk to US, would not need nuclear weapons if country's security was guaranteed
Yi stresses "the sincerity" of all parties to solve the nuclear crisis