A pedant writes, Salisbury did not show we have enemies. Salisbury showed Russia thought Britain to weak to stop an extra-territorial assassination of Russian traitors, not that it saw Britain as an enemy. It is the sort of thing Israel does, and possibly the United States.
Salisbury is quite a pleasant little city not far from Washington DC. I suspect that familiarity with the pronunciation comes from that Salisbury rathar than the Wilts one. https://en.m.wikipedia.org/wiki/Salisbury,_Maryland
Stonehenge is not in, or even that near, Salisbury. Salisbury has the perfect, complete, Early English catherdral including 404' spire. Very popular with Russian tourists, I believe.