US President Joe Biden has warned Russian President Vladimir Putin about election meddling in their first call as counterparts.
The conversation included a discussion about the ongoing opposition protests in Russia and an extension of the last remaining US-Russia nuclear arms pact.
According to a Russian statement, president Putin congratulated the new US president on winning the election, as both parties said they agreed to maintain contact moving forward.
President Biden made clear that the United States will act firmly in Defence of its national interests in response to actions by Russia that harm the US and its allies.
A White House said the two presidents also discussed the massive Solar-Winds cyber-attack, which has been blamed on Moscow.
The two leaders appeared to seal an agreement to renew New Start, an Obama-era accord that limits the amounts of warheads, missiles and launchers in the US-Russian nuclear arsenals, due to expire next month, and former president Donald Trump refused to sign on.