British Prime Minister Boris Johnson, seen hosting health service workers Tuesday at No. 10 Downing St. in London. The same day in the House of Commons, Johnson was dealt a political blow when the defection of a fellow Conservative left him without a working majority in Parliament.

British Prime Minister Boris Johnson, seen hosting health service workers Tuesday at No. 10 Downing St. in London. The same day in the House of Commons, Johnson was dealt a political blow when the defection of a fellow Conservative left him without a working majority in Parliament.