Can you give a brief summary of what's happening?There wasn't much evidence of anything before.
But Donald Trump Jr tweeted emails.
Basically Trump Jr was offered a meeting with a "Russian government attorney". At the meeting he was to be given evidence of dirt on Clinton; this was just after Trump won the Republican nomination.
It's still an open question of how damaging this is.
But apparently the FBI was not aware of this meeting.
The bombshell new stories about Donald Trump Jr. and Russia, explained - Vox