I know now what was happening to me, what was overwhelming me, what was about to consume and almost destroy me. Didier had even given me a name for it - assassin grief, he'd once called it: the kind of grief that lies in wait and attacks you from ambush, with no warning and no mercy. I know now that assassin grief can hide for years and then strike suddenly on the happiest day, without discernible reason or exegesis. But on that day, ... almost a year after Khader's death, I couldn't understand the dark and trembling mood that was moving in me, swelling to the sorrow I'd too long denied. I couldn't understand it, so i tried to fight it as a man fights pain or despair. But you can't bite down on assassin grief and will it away. The enemy stalks you, step for step, and knows your every move before you make it. The enemy is your own grieving heart and, when it strikes, it can't miss.
~ Gregory David Roberts