A summit between US President Donald Trump and Russian leader Vladimir Putin will go ahead as planned despite tension over Moscow's alleged election meddling, the White House says.

The US Department of Justice has charged 12 Russian intelligence officers with hacking Democratic officials in the 2016 US elections.

Hillary Clinton has been told it's time to "move on" after she added her own party officials to the list of those she blames for her 2016 election loss.

President-elect Donald Trump has rejected as "ridiculous" a CIA assessment that Russian hackers tried to sway the election in his favour.

The attacks on the foundation’s network, as well as those of the Democratic Party and Hillary Clinton’s presidential campaign

Democratic Party activists in some U.S. states are using Donald Trump, the Republican presidential candidate who has stirred controversy with his comments about illegal immigrants and women, as the centerpiece of their "get out the vote" campaign for the November elections.