Look who's coming to dinner - Date with Johnson has EU in tizz

By Robin Emmott BRUSSELS (Reuters) - Boris Johnson's shock appointment as Britain's foreign secretary has given European counterparts an immediate diplomatic headache -- over whether to have dinner with him on Sunday in Brussels. EU diplomats said ministers had planned a quiet chat on post-Brexit relations with Johnson's predecessor, expecting Philip Hammond, who campaigned to stay in the EU in last month's referendum, to reassure them on continued cooperation in crises such as Libya. Four EU an