FILE PHOTO: Britain's Foreign Secretary Boris Johnson leaves after Britain's Prime Minister Theresa May's speech at the Complesso Santa Maria Novella, Florence

FILE PHOTO: Britain’s Foreign Secretary Boris Johnson leaves after Britain’s Prime Minister Theresa May’s speech at the Complesso Santa Maria Novella, Florence

Former UK foreign secretary Boris Johnson. Photo: Reuters/Jeff J Mitchell

October 4, 2017 5:42 AM (UTC+8)