
What happens when a British Prime Minister resigns?
CNN
UK Prime Minister Boris Johnson resigned on Thursday following mounting pressure from lawmakers in his own Conservative Party to stand down.
Under the UK political system, between elections, only Conservative members of Parliament have the power to remove a sitting Conservative Prime Minister.
So, what happens to UK government when a Prime Minister resigns, and how is a new leader elected?

The governments of Mexico and the United States signed a memorandum of understanding on Thursday to fund and expedite several wastewater treatment projects in the Tijuana River basin. Untreated wastewater continually affects residents living along the river, which flows across the border from Tijuana and through several of San Diego’s southern neighborhoods.