Trump impeachment: Witness comes under attack - BBC News
Republicans questioned the integrity of White House official Lt Col Vindman during the hearing.
Four witnesses testified before Congress on Tuesday as part of the impeachment inquiry into President Donald Trump.

White House aide Lt Col Alexander Vindman and state department official Jennifer Williams appeared in the morning.

Some Republicans questioned the integrity of Lt Col Vindman during the hearing. The veteran was applauded by the audience at one point.