CNN's Russia investigation reporter Marshall Cohen said, by CNN's count, that Mueller has filed "191 criminal charges against 35 defendants", including "112 new charges brought today against a dozen Russian operatives for hacking".
The indictment states that the 12 Russian military intelligence officers hacked into the Clinton presidential campaign and Democratic Party, releasing tens of thousands of stolen communications, in a bid by a foreign government to meddle in the 2016 USA election.
"In light of this stunning indictment by the Justice Department that these Russian conspirators attacked our democracy and were communicating with Americans to interfere in our election, President Trump should immediately cancel his meeting with Vladimir Putin", said Senator Jack Reed (Democrat-Rhode Island), ranking Democrat on the Armed Services Committee.
The letter also said that if Trump is not prepared to ask Putin about Russian interference in the 2016 presidential election that he should not bother with the meeting at all.
The 12 were members of Russian military intelligence, known as the GRU, and are accused of engaging in a sustained effort to hack the computer networks of Democratic organizations and the Hillary Clinton campaign.
Intelligence agencies in the USA have since confirmed the belief that the hacking, which included the technique "spearphishing", was part of an extensive operation ordered by Putin to boost Trump's bid to become president of the United States.
Trump Attacks CNN, NBC in Joint Press Conference With British Prime Minister
Tapper was referring to an exchange on Friday at a joint press conference held by Trump and UK Prime Minister Theresa May . In denying a query from CNN anchor Jim Acosta , Trump said that "CNN is fake news".
"This indictment makes clear just how vast this operation was - including Russian intelligence officers' intrusion into the website of a state election board and theft of information related to approximately 500,000 voters", Democratic National Committee (DNC) chair Tom Perez tweeted.
She also noted there was no allegation the alleged Russian hacking impacted the outcome of the election.
Mueller previously indicted 13 Russians and three companies for allegedly interfering in the presidential vote.
"He's been very nice to me the times I've met him", Trump said Thursday after the North Atlantic Treaty Organisation summit.
Rosenstein said these new indictments contain no allegation that any United States citizen committed a crime or that it changed the final vote count or election result.
Mueller's indictment states that later that very night, Russian hackers became much more brazen: they "attempted after hours to spearphish for the first time email accounts at a domain hosted by a third-party provider and used by Clinton's personal office".
Meddling claims may overshadow summit
Asked at the end of the press conference whether he would tell Putin to stay out of US elections, Trump responded simply: 'Yes'. In February, 13 Russians and three Russian companies were charged with interfering with the election.
"I love the United States", Trump continued.
"I don't go around telling the president what to do", said Jay Ashcroft, the Republican secretary of state in Missouri.
Rosenstein said he briefed Trump earlier this week on the charges. "We are being divided", Rep. Trey Gowdy (R-SC) said of Mueller's investigation. Beginning sometime around 2010, Yermakov used online personas like "Kate S. Milton", "James McMorgans" and "Karen W. Millen" to carry out hacking attempts and helped hack at least two emails accounts that led to the released of campaign documents through DCLeaks in 2016, according to the indictment.
"All I can do is say, 'Did you?'" Trump said days ago at a news conference in Brussels.
The indictment doesn't identify the person, though longtime Trump confidant Roger Stone acknowledged Friday, through his lawyer, a "24-word exchange with someone on Twitter claiming to be Guccifer 2.0".
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And while US shale oil production continues to rise, global demand for oil remains strong. Oil prices have risen to multi-year highs of around $78 per barrel in recent days.