Lt. Col. Alexander Vindman, (C), director for European Affairs at the National Security Council, arrives at the U.S. Capitol on October 29, 2019 in Washington, DC.

Army Lt. Col. Alexander Vindman, a National Security Council staffer whose testimony about President Donald Trump at House impeachment hearings angered the president, was escorted out of the White House on Friday afternoon, his lawyer said.

Trump, "the most powerful man in the world — buoyed by the silent, the pliable and the complicit — has decided to exact revenge," said Vindman's lawyer, David Pressman.

Hours earlier, Trump had said of the Purple Heart recipient Vindman, "I'm not happy with him."

"Do you think I'm supposed to be happy with him?" Trump asked reporters. "I'm not."

NBC News, citing a source familiar with the situation, reported later Friday that Yevgeny Vindman, Alexander's twin brother who like him worked at the NSC as an attorney, was also escorted out of the White House. Yevgeny was not a witness at the House impeachment hearings.

Following Vindman's ejection from the White House, Pressman said, "There is no question in the mind of any American why this man's job is over, why this country now has one less soldier serving it at the White House."

"Vindman was asked to leave for telling the truth," the attorney said. "His honor, his commitment to right, frightened the powerful."

"The truth has cost LTC Alexander Vindman his job, his career, and his privacy," Pressman said.

"He did what any member of our military is charged with doing every day: he followed orders, he obeyed his oath, and he served his country, even when doing so was fraught with danger and personal peril."