It is hard not to see them as excessive. The glorious gold and silver vessels that graced elite banquets in the Achaemenid empire showcase the skill of Persian metalworkers. But while the fine details of animals, mythical scenes, and intricate patterns still thrill viewers, did these sumptuous wares ever have a role beyond expressing extreme wealth? In our cover feature, we see how a British Museum exhibition is revealing that this seemingly gratuitous glitz knitted an empire together, and he...