The overwhelming victory of the 1967 Six-Day War is sometimes used by proponents of an Israeli withdrawal from the West Bank as proof that Israel can defend itself from behind the “green line.” They argue that Israel won the 1967 conflict from behind the pre-1967 borders, and is therefore capable of doing so again, and from the same lines, if necessary. This, they claim, clears the path to a withdrawal. However, this argument ignores all the military-strategic changes that have washed over the region in the fifty years since that conflict. It fails to take into account that the Six-Day War was a one-time event, with unique circumstances that will not be seen again.