Thank you, my friend. I am Chris Cuomo and welcome to prime time.

Our Democrats about to snag their biggest impeachment witness yet.

We have big news on that front.

And we have a key Senate player here tonight with a Ukraine connection of his own.

Plus, one of the biggest assaults on key witness, Colonel Vindman,

is about to get blown up on this show in just moments.

So what do you say?

Let's get after it.

The president's former national security advisor, John Bolton, is he the next big witness?

A source tells CNN he was invited for next Thursday. His lawyer said tonight, it's not going to happen without a

subpoena. That's arranged easily enough these days. Meanwhile, a Bolton top NSC deputy just resigned on the eve

of his appearance before impeachment investigators tomorrow. Tim Morrison. Why would he be important?

Well, he can back up what Bill Taylor testified

to as to the understanding of why there was a quid pro quo. And CNN has now learned that

Lieutenant Colonel Alexander Vidman also tied the president to a Ukraine quid pro quo in his

testimony on Tuesday, as was expected. And also, according to sources,

he told investigators, he was convinced the president was personally blocking 400 million

in military aid to force Ukraine to publicly announce an investigation into the Bidens,

even before Vindman heard that July 25th phone call. So with that, let's bring in

Senator Chris Murphy. He was in Ukraine last month. He says he raised red flags to President Zelensky

about not getting dragged into American politics. The Foreign Relations Committee member,

Democrat from Connecticut, joins us now. Good to see you,

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