In case anyone else was confused by the literary reference, "one with Nineveh and Tyre" is from Kipling's "Recessional":

https://en.wikipedia.org/wiki/Recessional_(poem)

Which, I think, is the poem that made "lest we forget" a well-known phrase (though the original is from the Bible).

Nineveh (now Mosul, Iraq) and Tyre (in Lebanon) were great cities of their time, but now mostly known for their ruins. In Britain, they're commonly used as symbols of foregone empires.