The U.S. have made a deal with the EU to punish Russia for possible aggression against Ukraine. The respective set of sanctions may differ but they will still deal considerable damage. Victoria Nuland, the US Under Secretary of State said so during the briefing on January 11.
According to her, these will be financial and export restrictions that will seriously affect the Russian economy. The official claims that the United States and Europe have a common understanding of what kind of measures should be taken against Russia.
As is known, the U.S. government has been preparing to send Ukraine radar systems and naval equipment. It's still uncertain, though, when the first supplies will reach this country. According to Politico, it's a part of the USD 200 million worth package of extra defense assistance for Ukraine that the White House approved in late December 2021,
"Given the fact that the U.S. intelligence assumes that Russia could initiate a full-blown invasion, using all of its military might, this assistance would let Ukraine inflict extra damage to Russia, but it would not significantly change the outcome", said the source in Ukraine's presidential office.