“Obama treated Russia very dismissively, calling them a regional power.
They did not want to think too much about Russia, "Hill quoted the New York Times as saying.
She noted that "the world has completely changed."
The Biden administration "will have to think differently," she said.
Previously, Joe Biden received the required 270 electoral votes, which are needed to be elected president.
Russian leader Vladimir Putin congratulated Joe Biden on his victory in the US presidential election.