The current diplomatic constellation presents Africa with plenty of options; the region must choose well. Since the conclusion of the U.S.-Africa Leaders Summit last December, the traffic from Washington to various African capitals has been unmistakably busy. Vice-President Kamala Harris, currently rounding up a nine-day trip to Ghana, Tanzania, and Zambia, is the latest and, so far, most senior American official to jet into the region with a diplomatic pouch weighed down by goodwill, kisses, and felicitations....