1.
the act of lending; a grant of the temporary use of something:
the loan of a book.
2.
something lent or furnished on condition of being returned, especially a sum of money lent at interest.

Link to present incidents:
The British Museum’s decision to send a depiction of the river god Ilissos on loan to St Petersburg’s State Hermitage Museum has been called “an affront to the Greek people” by the Greek prime minister.