Lt. Col. Alexander Vindman

Vindman is retiring "after it has been made clear that his future within the institution he has dutifully served will forever be limited," his lawyer said Wednesday.

Lt. Col. Alexander Vindman was reportedly escorted out of the White House, while Gordon Sondland was recalled from his post as ambassador to the European Union.

The House Intelligence Committee is hearing from four more witnesses on Tuesday, including Ukraine specialist Lt. Col. Alexander Vindman and former National Security Council official Tim Morrison.

The U.S. House of Representatives continues open hearings in its impeachment inquiry into President Trump this morning. The public hearings begin at 9…

Lt. Col. Alexander Vindman is a foreign affairs expert who serves on the National Security Council. He has been described as having told investigators he worried immediately about the Ukraine affair.

The resolution calls for public hearings and allows President Trump or his lawyers to cross-examine witnesses. But the administration says its "rights remain undefined, unclear, and uncertain."