British Prime Minister Theresa May leaves No. 10 Downing Street in London on Wednesday. Now that May has reached an agreement with European Union negotiators, she faces still another difficult task: persuading skeptical Brits to get on board.

British Prime Minister Theresa May leaves No. 10 Downing Street in London on Wednesday. Now that May has reached an agreement with European Union negotiators, she faces still another difficult task: persuading skeptical Brits to get on board.