Who is Dominic Raab, the man standing in for Boris Johnson?

LONDON — With Prime Minister Boris Johnson in an intensive care unit with covid-19, the British government and its response to the coronavirus crisis is being led by Foreign Secretary Dominic Raab, a Johnson loyalist with a markedly different style than his boss.

Unlike the United States, Britain does not have clear succession rules. There is no one with the title “deputy prime minister.” But even before Johnson was first taken to the hospital Sunday evening, he had nominated Raab to stand in for him if needed.