Now it's deadly serious - Analysis by Anthony Zurcher, BBC North America reporter
Robert Mueller's special counsel investigation has always been a concern for the Trump administration. Now it's deadly serious business.
With the news that a grand jury has been convened in Washington DC, and that it is looking into the June 2016 meeting between Donald Trump Jr and Russian nationals, it's clear the investigation is focusing on the president's inner circle.
This news shouldn't come as a huge shock, given that Mr Mueller has been staffing up with veteran criminal prosecutors and investigators. It is, however, a necessary step that could eventually lead to criminal indictments. At the very least it's a sign that Mr Mueller could be on the trail of something big - expanding the scope beyond former National Security Adviser Michael Flynn and his questionable lobbying - and his investigation is not going to go away anytime soon.
Originally posted at otkaznik1.dreamwidth.org