TIFF 2013: The refreshing promise of ‘Half of a Yellow Sun’ is swiftly wasted

Every few years, a film with a variation on this plot comes around: “Social strife is happening in x African country. The story is being told through the eyes of x, whose private life is changed forever in the face of a country crumbling around him”. You know these films. They’re your Blood Diamonds, Hotel Rwandas, and Last King of Scotlands.