North Korea has released three American prisoners following a visit to Pyongyang by Secretary of State Mike Pompeo, a sign of warming relations in advance of President Donald Trump’s historic meeting with North Korean leader Kim Jong-un.

The prisoners, all Korean-American, are en route back to America with Pompeo, and it is expected they will be greeted by Mr Trump.

According to Mr Trump, the date and time of a future meeting with Mr Kim has been “set.”