[Publius6961]

The statement said US explorer Hiram Bingham had originally been given permission to export the items on the understanding they were on loan and would be returned.

This statement is meaningful if, and only if, the understanding was made in writing and both parties can produce identical copies.
I suspect that this is a retroactive thing on Peru's part, relying mainly on their "understanding" of verbal agreement at the time.

This is similar to Mexico's claims; or Egypt's; or Iraq's.
All are sources of treasures sought, found and preserved by Europeans, and of absolutely no value to the world's present stage of either civilization, societal maturity or technological excellence.

I say return them all, let them deteriorate and disappear, and everyone will be none the worse for it.

[ScreamingFist]

All are sources of treasures sought, found and preserved by Europeans, and of absolutely no value to the world's present stage of either civilization, societal maturity or technological excellence

Are you suggesting study of the past is not important? As far a no value, I'm sure many people would pay big to have King Tut's mask hanging on their living room wall.....;)

[Zeroisanumber]

I say return them all, let them deteriorate and disappear, and everyone will be none the worse for it.

Might as well burn down Monticello while we're at it, eh? Pave over Gettysburg and put up a racino and a McDonald's? Chip up Stonehenge for bricks and grind the Parthenon to dust?