Did Saruman Believe He Could Master The One Ring?

[The Saucepan Man]

Originally Posted by Fordim

Because he knows that the Hobbit (with the Ring) was travelling with three other Hobbits who probably have a good idea of where their friend is at (with said Ring).

Originally Posted by Fordim

To extract certain information (see above) ...

But, as Gandalf states, he did not only want information. Regardless of the Hobbit's information value, he wanted the Hobbit. He was obsessed with the Hobbit. Why?

Originally Posted by Fordim

... and, well, he enjoys tormenting innocents.

I don't doubt that he does. But he was particularly excited about the prospect of entertaining this particular Hobbit at Barad-Dur. Why?

Originally Posted by Fordim

That Sauron thought Pippin was, and I quote "captive" in Isengard and not riding free with Gandalf with Isengard in smoking ruins behind them.

Well, it's not going to take him long to clear up that particular misunderstanding. A Nazgul was en route to Isengard even as Gandalf was speaking. Yet Gandalf says that it may be some time before Sauron learns of his error. What error could that be?