[Overtaxed]

Rivendell was the one under threat from Saruman...

And Rohan wasn't? So Saruman sent that weasel Wormtongue to Theoden, closed the Gap of Rohan, and did battle at the Isen and Helm's Deep just for fun?

[HairOfTheDog]

That had not happened yet, or was not yet known, when the conversation you condemn took place!