Vance didn't believe for a second that Zelensky was grandstanding. He was trying to manipulate his video audience into believing that Vance wasn't grandstandin

Vance didn't believe for a second that Zelensky was grandstanding. He was trying to manipulate his video audience into believing that Vance wasn't grandstanding by accusing Zelensky of misbehaving as he was obviously doing himself. It's an old propaganda trick that Vance probably learned from the Russians (who used it heavily for 70+ years). But it works only on an easily intimidatable audience that doesn't know any better. Nor care.