UVA history professor Laurent Dubois, author of “Haiti: The Aftershocks of History,” said there were still “a lot of details to be understood” about Moïse’s “shocking” assassination. “There’s been an enduring political crisis worsening over the past several years,” he said. “Over the past months, in particular, there have been a lot of warnings coming from observers on the ground that the situation has gotten extremely distressing and deteriorating.”