House Democrats crossed the Rubicon this week and committed, for the record, to their impeachment inquiry. Although they said impeachment isn't a foregone conclusion, they tried to underscore again that this is serious.
Meanwhile, more confirmations of the facts of the Ukraine affair meant the end of the investigation process may now be in view — and public hearings could be coming next.
Here's what you need to know about the events of a historic week in Washington and what may be around the corner.
Lt. Col. Vindman and Mr. Morrison