Hillary Clinton wasn’t the only Obama administration official who went to bat for Boko Haram over the past few years. Soon after John Kerry took over as Secretary of State, the U.S. Ambassador to Nigeria, Terence P. McCulley, accused the Nigerian government of butchery during a confrontation with Boko Haram terrorists in Baga, a Nigerian town on the shores of Lake Chad, and in May 2013 threatened to withdraw U.S. military aid from the West African nation. Boko Haram militants attacked a Nigerian military outpost in April 2013 outside Baga, killing one soldier. Following the three-day battle human rights activists,...