Fortunately, a diplomatic incident was averted, and on the way home Hillary danced through the aisles of the plane, wearing an Eritrean robe given by her hosts. It was a side of the First Lady never on public display at home, and a sure sign that after a traumatic first term, Hillary was ready for a comeback. The Africa tour was a highlight of what she called ““a great year’’ in which she turned 50, sent her only child to college, started a nationwide child-care campaign and saw her approval ratings skyrocket to the highest levels since 1993. I don’t know if being pelted with popcorn was the breakthrough, but she hasn’t seemed quite the same since.