Russia's President Vladimir Putin has accused the US of trying to draw his country into a war in Ukraine.
He said America's goal was to use a confrontation as a pretext to impose more sanctions on Russia.
Mr Putin also said the US was ignoring Russia's concerns about the European expansion of Nato - the Western military alliance.
The US and its allies accuse Russia of planning to invade Ukraine, something Russia has repeatedly denied.
On Tuesday, US Secretary of State Antony Blinken tweeted that the US was "committed to preventing a conflict that is in no one's interest".
Meanwhile, Spanish newspaper El Pais has released what it says are confidential documents the US and Nato sent to Russia last week - including offers of talks on cutting back on nuclear weaponry and trust-building measures in exchange for reducing tensions over Ukraine.