These are a few things that will not solve the terrible and tangled web of causation and violence in which the attacks of Friday night were spawned. A 242-ship Navy will not stop one motivated murderous fanatic from emptying the clip of an AK-47 into the windows of a crowded restaurant. The F-35 fighter plane will not stop a group of motivated murderous fanatics from detonating bombs at a soccer match. A missile-defense shield in Poland will not stop a platoon of motivated murderous fanatics from opening up in a jammed concert hall, or taking hostages, or taking themselves out with suicide belts when the police break down the doors. American soldiers dying in the sands of Syria or Iraq will not stop the events like what happened in Paris from happening again because American soldiers dying in the sands of Syria or Iraq will be dying there in combat against only the most obvious physical manifestation of a deeper complex of ancient causes and ancient effects made worse by the reach of the modern technology of bloodshed and murder. Nobody’s death is ever sacrifice enough for that.