Tanzania's ongoing brush with foreign investment under President John Magufuli is encompassing a growing number of Chinese firms, individuals and entities. On Oct. 24, Tanzanian officials arrested four Chinese nationals overseeing efforts to build a canal and road in Dar es Salaam, citing the projects' slow progress. The detained contractors will allegedly continue to work during the day while spending each night at a police station until the governor of Dar es Salaam is satisfied with their progress. According to Tanzanian officials, the arrests were meant to serve as a warning to other foreign contractors in the country, illuminating Tanzania's increasingly poor investment and business climate under Magufuli's nationalist agenda....