Bahrain’s Prince Khalifa bin Salman al-Khalifa, the world’s longest-serving Prime Minister who had held the post since independence in 1971, died Wednesday at the age of 84, state media announced. “The Royal Court mourns His Royal Highness… who passed away this morning at Mayo Clinic Hospital in the United States of America,” the Bahrain News Agency said, adding that the country will hold a week of official mourning. READ ALSO: Former Kaduna Gov, Balarabe Musa dies at 84 The burial ceremony will take place after the body has been transported home from...