Boris Johnson set to become UK PM

This file photo taken on Oct. 2, 2018 shows British former Foreign Secretary Boris Johnson walking onto the stage to speak at a Conservative home fringe meeting on day three of the Conservatives Party annual conference 2018 in Birmingham, Britain. Former British Foreign Secretary and ex-mayor of London Boris Johnson was elected the leader of the ruling Conservative party on Tuesday and set to become the country's prime minister. (Xinhua/Han Yan)