From an AP story headlined “Reaction to Boris Johnson’s resignation”:

LONDON (AP) — Some reaction from the U.K. and around the world after British Prime Minister Boris Johnson said Thursday he would step down immediately as Conservative Party leader but remain as prime minister until the party chooses his successor:

“The proposal for the prime minister to remain in office – for up to three months – having lost the support of his Cabinet, his government and his parliamentary party is unwise, and may be unsustainable.” — John Major, former Conservative U.K. prime minister.