Worried in what way about Gondor and Rohan?
What more is he supposed to say for them?
and how exactly is he more worried about Rivendell than anyone else?
I propose that he didn't say he wanted to protect Rivendell, only that Rivendell could not withstand both Mordor and Isenguard... So the ring could not "stay" there. Another option needed to be found!
What is with the boy's choir track on this CD? - it scared me, coming in out of the blue like that!