Without formally announcing it and for reasons no one has bothered to explain, the American empire has declared war on Russia. That is the clear message the Biden administration is sending with the new round of sanctions. They have also kicked out some Russian diplomats. More importantly, the US is telling US banks they cannot have any dealings with companies working on Nord Stream 2, the big natural gas pipeline the Russians are building to supply gas to Europe.
In fairness, the war with Russia started before Biden was installed. You could argue it started back in the Bush years when they convinced the former Soviet republic of Georgia to annex parts of South Ossetia. The Bush people were making noises about adding Georgia to NATO, which did not sit well with Russia. From their perspective, this was a provocative act of aggression. It was correctly seen as an effort to surround Russian with states loyal to the American empire.
Team Obama promised to cool things down with the old enemy. They made a big show of the “big reset” with the Russians. Hillary Clinton did a photo-op with the Russian foreign minister in which they jointly held a big red button labeled “reset” on which each had their hand. Of course, administrations come and go, but the usual suspects that actually run imperial foreign policy never change. By the end of the Obama years, they were claiming the Russians rigged the presidential election.