"Destroy it.... Isildur!"

[Bill Ferny]

I agree with most of the reasons given above as to why Elrond would not desire to use force against Isildur. However, I still think that it is being taken for granted that Elrond actually could use force. There is nothing in the book that indicates Elrond actually had the physical means to take the ring by force. Isildur, after all, comes from a line whose people not only once defeated the Dark Lord, but chained him and threw him into a dungeon.