Robert Foxworth is most likely the worst call for acting a Vulcan.
He is constantly angry, emotional, illogocal, smug and lies all the time.
I'm aware that being a liar belongs to the role.
But being this emotional in the role of a supreme leader of Vulcan is not.
I really don't get why the director didn't intervene and tell him to play a Vulcan, not a Klingon.