Kamila Shamsie weaves a tale through the lives of two families, across three continents, that encapsulates all the horror of war in this present age, from Nagasaki to the Partition riots to Afghanistan to 9/11 to Afghanistan again. And through it all shines that wonderful defiant human spirit that somehow, from somewhere, finds the courage to say 'No'. And then wonders 'How did it come to this?'