US secretary of state Mike Pompeo on his way to Pyongyang, North Korea at Andrews Air Force Base, Maryland, on Thursday. Photograph:  Andrew Harnik/Reuters

In the weeks since his landmark summit with North Korean leader Kim Jong-un, Donald Trump has been buoyant, maintaining that talks aimed at disarming (...)

 A South Korean man reads a newspaper reporting the US president Donald Trump meeting with North Korean leader Kim Jong-un on Tuesday in Seoul, South Korea.  Photograph: Chung Sung-Jun/Getty Images

South Korea has reacted with a mix of optimism and confusion to the historic summit between Donald Trump and the North Korean leader, Kim Jong-un, aft(...)