Two men believed to be Haitian Americans — one of them purportedly a former bodyguard at the Canadian Embassy in Port au Prince — have been arrested in connection with the assassination of Haiti's president, a senior Haitian official said Thursday. Prime Minister Claude Joseph assumed leadership of Haiti with the backing of police and the military and on Thursday asked people to reopen businesses and go back to work as he ordered the reopening of the international airport. On Wednesday, Joseph decreed a two-week state of siege following Moïse's killing, which stunned a nation grappling with some of the...