"We are working with our allies in that regard, and we've been very clear that we are prepared to issue sanctions like you've not seen before," she told CBS.
Asked about the possibility of a hot war breaking out in Europe in the coming weeks, Harris said the Biden administration was having "direct conversations" with Russia. Joe Biden, she said, made it clear to President Vladimir Putin that Washington would stand up for Ukraine’s territorial integrity.
The EU and the US have accused Russia of massing troops on the border with Ukraine in what Kiev claims is preparation for invasion. Russia says it is free to move military personnel anywhere within its territory and demands security guarantees from NATO.
On December 17, Russia published its proposals on mutual security guarantees with the US and NATO.
"We wanted people in Russia and Ukraine and people in Europe and the United States to understand our idea, what we wanted to achieve with these talks. I don't see anything wrong with that," President Vladimir Putin said.