The Kremlin on Monday denied any role in recent cyberattacks on the United States, saying American accusations that Russia was behind a major security breach lacked evidence.

Russia condemned as unacceptable on Thursday a US statement that senior Russian officials may have been behind the poisoning of the opposition leader Alexei Navalny.

The United States accused Russia of test-firing an anti-satellite weapon in space, warning that the threat against Washington's systems was "real, serious and increasing."

The Kremlin on Tuesday said Moscow had been the victim of US cyber attacks "for years" following a New York Times report that Washington is stepping up digital incursions into Russia's power grid.

Russia Friday rejected an appeal from London to "change its behaviour" in order to mend relations that have been stung by the poisoning of a former Russian spy in Britain.

The Kremlin on Monday reiterated denials that Moscow interfered in the 2016 US presidential election after Special Counsel Robert Mueller's report found conclusive evidence of Russian meddling.

The Kremlin on Tuesday dismissed as "groundless" warnings from Britain and the United States that Russian state-sponsored hackers were threatening their crucial computer networks.

President Vladimir Putin's spokesman on Wednesday rejected Britain's "unfounded accusations" and "ultimatums" over the poisoning of a former double agent in Britain.

Moscow on Friday said it "regrets" the decision of EU leaders this week to extend tough economic sanctions against Russia for a further six months over its meddling in Ukraine.

The Kremlin on Monday warned that new US sanctions on Russia would hit the interests of both sides as Congress gears up to approved fresh punitive measures.

The Kremlin on Monday said Washington must unconditionally restore its access to diplomatic compounds in the United States ahead of high-level talks on the issue.

The Kremlin on Wednesday denied as "falsehoods and fabrications" a New York Times report that there were repeated contacts between Donald Trump's 2016 presidential campaign team and senior Russian officials.