Reflecting on the events that shaped the summer of 2016, its easy to be overwhelmed by the many images evoking contradictory emotions. The smiles of triumphant athletes mixed in with the tears of parents of the victims of the Nice terror attack. And yet, one image prevails over all the others. It’s the picture of a five-year-old Syrian boy pulled from the rubble of his home in the besieged city of Aleppo, after yet another bombing from Syrian forces.