'Despicable' Trump pounded for openly threatening war veteran Vindman: 'Textbook witness intimidation'
Lieutenant Colonel Alexander Vindman (R), a White House National Security Council Ukraine expert, arrives at Congress to testify in the impeachment inquiry against President Donald Trump. (AFP / MANDEL NGAN)

During his brief press availability after returning to the White House from New York, President Donald Trump was asked about reported testimony from Lt. Col. Alexander Vindman about his notorious Ukraine call where he offered to release foreign aid in return for dirt on former Vice President Joe Biden, which led the president make a not-too-subtle threat.

Asked about his claim that Vindman is a "Never-Trumper," the president shot back, "We'll be showing that to you real soon," and then refused to elaborate on what he meant.

That set off Twitter commenters who saw it as an additional salvo by Trump and White House officials to intimidate the national security specialist, with the implication that White House is looking for dirt on him.

As one commenter pointed out: "Character assassination, like 'lugenpresse', to discredit the messenger is job 1."

You can see a clip of Trump's answer below, along with comments: