That summit will come just days after a dozen Russian intelligence officers were charged with hacking during the 2016 U.S. presidential campaign. Our White House Correspondent Jessica Stone reports.

Just days before U.S. President Donald Trump meets one-on-one with Russian President Vladimir Putin, Washington accuses 12 Russian spies of hacking the election that landed him in the White House. According to court documents, investigators say the Kremlin-backed hackers broke into the email accounts of the Hillary Clinton campaign, beginning eight months before the 2016 presidential election. They allegedly stole information, released it publicly and later communicated about its contents with members of the Trump campaign.

ROD ROSENSTEIN DEPUTY US ATTORNEY GENERAL "There's no allegation in this indictment, that the Americans knew they were corresponding with Russian intelligence officers. There was no allegation in this indictment that any American citizen committed a crime. There is no allegation that the conspiracy changed the vote count, or affected any election result."

Before Friday, 20 people and three companies had been charged with Russian meddling in the 2016 presidential election. That includes four former Trump campaign and White House staffers and 13 Russians.

The Russian Foreign Ministry said in a statement "It is regrettable that the circulation of false information in Washington has become the norm, and that criminal cases are brought for obvious political reasons."

The U.S. deputy attorney general denied that politics motivated the timing of the Justice Department charges.

ROD ROSENSTEIN DEPUTY US ATTORNEY GENERAL "The indictment was returned today because prosecutors determined that the evidence was sufficient to present these allegations. The president is fully aware of the department's actions today."

Back in Washington, some politicians called on Trump to back out of Monday's summit with Putin, with Democrat Nancy Pelosi tweeting, he "must immediately cancel his meeting with Putin." and Republican John McCain tweeting, "If President Trump is not prepared to hold Putin accountable, the Helsinki Summit should not move forward." But the White House says there are no plans to cancel Monday's meeting between Putin and Trump. And Trump says he'll raise the U.S. intelligence community's allegation that the Kremlin interfered in the 2016 presidential election during his get together.

DONALD TRUMP US PRESIDENT "I know you'll ask will we be talking about meddling and I will absolutely bring that up. I don't think you'll have any, 'gee I did it, I did it, you got me.'"

JESSICA STONE WASHINGTON DC "Of course, if Trump says he raised the question of election meddling with Putin, there may be no way to verify that claim. He's expected to meet alone with Putin next week without any aides present. Jessica Stone, CGTN, Washington."