Editor
LONDON — His support crumbling, his government in disarray, his alibis exhausted, Prime Minister Boris Johnson of Britain tried frantically on Wednesday to salvage his position, even as a delegation of cabinet colleagues traveled to Downing Street to plead with their scandal-scarred leader to step down.
By Thursday morning, more than 50 government ministers or aides had quit. The day before, multiple Conservative Party lawmakers had urged Mr. Johnson to resign, and he had received a…
