Master of Whispers title says:

You may resolve your INT claim against any number of opponents of your choice.

Lets assume there are 4 players in a melee game (A, B, C and D). Player A has the Master of Whispers title. He attacks and wins a INT challenge against the player B. Can he choose to resolve a INT claim only against players C and D (and do not resolve claim against the defender)? Can he choose to not resolve claim at all?

You may think that this makes no sense, but I think it opens a room for negotiations.

Yes, the card gives you discretion as to who gets to fulfill claim.

Thx. That's what I thought.