Alexander Vindman

(Newser) - Things got heated Tuesday at the deposition of Lt. Col. Alexander Vindman, the top Ukraine expert on the National Security Council and the first current White House official to testify in the impeachment inquiry. Sources from both parties, five in all, tell CNN a shouting match erupted during the closed-door...

(Newser) - It could be a troubling day for President Trump in terms of impeachment testimony, and he unleashed a series of tweets Tuesday morning to undermine the credibility of a key witness. "Why are people that I never even heard of testifying about the call," Trump tweeted . "Just...