Thread by @MSNBC

Live on @MSNBC: Former US ambassador to Ukraine Marie Yovanovitch publicly testifies in Trump impeachment inquiry.

Chairman Schiff delivers opening statement ahead of Yovanovitch testimony at impeachment hearing.

US Amb. to Ukraine Marie Yovanovitch is sworn in at the second public Trump impeachment hearing.

Live blog: nbcnews.to/37ayPug

NEW: White House releases memo of April 21 call between Pres. Trump and Ukrainian Pres. Zelenskiy; notes memo is "not a verbatim transcript" of the discussion. on.msnbc.com/2phUmjo

Chairman Schiff: "I will now call for the president to release the thousands of other records that he has instructed the State Dept. not to release." on.msnbc.com/2phUmjo

White House: “The President took the unprecedented steps to declassify and release the transcripts of both of his phone calls with President Zelenskiy so that every American can see he did nothing wrong.”

WATCH: Speaking of fighting corruption in Ukraine, Yovanovitch says it "continues to amaze me that they found Americans willing to partner with them" in orchestrating her removal. "How could our system fail like this?"

Yovanovitch: "Our Ukraine policy has been thrown into disarray, and shady interests the world over have learned how little it takes to remove an American ambassador who does not give them what they want."

BREAKING: In impeachment hearing, former US Amb. Yovanovitch warns that the US State Dept. and US diplomats are being undermined from within, and the State Dept. leadership is allowing it to happen and not defending US diplomats. nbcnews.to/2KpdXW9

WATCH: In impeachment hearing, Yovanovitch expresses grave concerns in the lack of support and defense of staff from US State Dept. leadership, and warns of “real harm” in undermining US diplomats. on.msnbc.com/33RHpMr

In April, White House said that the president expressed commitment to work with Ukraine to "root out corruption” during call with Ukraine’s president.

Newly released memo of the call does not reflect such a discussion. nbcnews.to/2COzzat

Daniel Goldman and Steve Castor: More about the two staff counsels who are questioning witnesses in the public impeachment hearings. nbcnews.to/2CIDyFx

BREAKING: As Yovanovitch testifies about being undermined from within the US government and feeling threatened by the president, Chairman Schiff pauses the impeachment hearing to read President Trump's tweets attacking Yovanovitch while she was testifying.

Schiff asked Yovanovitch how the president’s words might affect other witnesses in the impeachment inquiry.

“It’s very intimidating,” she said.

Schiff told Yovanovitch, “Some of us here take witness intimidation very, very seriously.” on.msnbc.com/2KqjcFn

WATCH: Former Sen. McCaskill reacts to President Trump attacking an impeachment hearing witness in real-time during the hearing: “I am so proud of this woman … this is who they had to get rid of to complete their scam.”

.@NicolleDWallace says President Trump's tweets attacking Yovanovitch are "real-time witness tampering and intimidation."
msnbc.com/msnbc/watch/wa…

@NicolleDWallace .@HardballChris on Yovanovitch:

"I think her power, her passion, her loyalty, her credibility was so powerful ... I think Trump doesn't understand that kind of discipline, but he's afraid of it." msnbc.com/msnbc/watch/ma…

BREAKING: Chuck Rosenberg: Sec. Pompeo is carrying out “an act of abject cowardice” without a spine, particularly as a former West Point officer, with a “complete failure of leadership” to stand up and defend his diplomats against attacks from the US president.

.@GarrettHaake on Chairman Schiff and the GOP at today's impeachment hearing: "He was locking down the room anytime they tried to raise a point of order."
on.msnbc.com/3518nBa

@GarrettHaake Rep. Swalwell on Yovanovitch: "By attacking the witness, the president continues to act guilty... the president is trying to intimidate Amb. Yovanovitch, but guess what? It's not going to work." on.msnbc.com/32Rqng1

@GarrettHaake Hillary Clinton: "Witness intimidation is a crime, no matter who does it. Full stop."

@GarrettHaake Chairman Schiff: "What you saw today is witness intimation in real time by the president of the United States." on.msnbc.com/2NNnVmm

@GarrettHaake .@HardballChris: "If I were a Republican ... I'd say: ‘What happened to my god damn party?'"
on.msnbc.com/2qZTsII

@GarrettHaake @HardballChris Live on @MSNBC: Marie Yovanovitch testimony continues in impeachment hearing.

Marie Yovanovitch describes how Ukrainian officials began to ask her if she'd be ousted, and how that affected her ability to do her job.

NEW: White House asserts to @NBCNews that the president's tweet "was not witness intimidation, it was simply the President’s opinion, which he is entitled to."

“It’s very intimidating,” former Amb. Yovanovitch said of president's tweets during the hearing nbcnews.to/2QjCekp

WATCH: Yovanovitch says the smear campaign against her has been personally difficult, and she wonders why, if the president simply wanted a different ambassador, he wouldn't have just said he wanted a different ambassador.

Rep. Quigley to Yovanovitch: "It's not the end of a Hallmark movie. It's the end of a really bad reality TV show brought to you by someone who knows a lot about that." on.msnbc.com/2qUnRIA

.@HardballChris: "It's going to be the main headline tomorrow morning... 'Trump accused of witness tampering.'"
on.msnbc.com/2Ko66Ze

@HardballChris WATCH: Fmr. Sen. McCaskill on Republican questioning of Yovanovitch: “This witness did so well this morning, and then for this president to do what he did that these members knew that there was a little 'cleanup on aisle 5' they needed to do." on.msnbc.com/2qUqVo4