Boris Johnson’s long litany of undiplomatic insults

Boris Johnson’s appointment as foreign secretary is likely to raise eyebrows after he blazed a trail of high-profile gaffes and controversies on the international stage.

Labour MP Chuka Umunna and, more improbably, the US pop star Cher were among those to comment after the appointment of the blond Brexiteer-in-chief to the UK’s top diplomatic post.

Outgoing US president Barack Obama, Turkish president Recep Tayyip Erdogan are among those who Mr Johnson has turned his attention to in recent weeks.