Washington (CNN)US intelligence has identified the go-betweens the Russians used to provide stolen emails to WikiLeaks, according to US officials familiar with the classified intelligence review that was presented to President Barack Obama on Thursday. In a Fox News interview earlier this week, WikiLeaks founder Julian Assange denied that Russia was the source of leaked Democratic emails that roiled the 2016 election to the detriment of President-elect Donald Trump's rival, Democrat Hillary Clinton.