Three US citizens have been set free from prison by North Korea, according to a tweet on 9 May from US president Donald Trump. This is viewed as a goodwill gesture before a historic summit between Mr Trump and Kim Jong-un. Mr Trump greeted the men when they returned with secretary of state Mike Pompeo, who was in Pyongyang to arrange a date and location for the planned talks. Missionary Kim Hak-song, humanitarian worker Tony Kim, and pastor Kim Dong-chul boarded the plane ‘without assistance’, the White House said. They had been jailed for alleged anti-state activities and placed in labour camps.