KEY POINTS
  • The United States is prepared to sanction Chinese banks and companies, as well as Beijing's leadership, if they aid Russia's military in its invasion of Ukraine, U.S. Treasury Secretary Janet Yellen said Monday.
  • The comments were part of a broader economic message that she has delivered to Chinese officials during her visit to the country over the past several days.
  • The U.S. and China have been working to heal their relations even as the two superpowers manage ongoing economic tensions.
US Treasury Secretary Janet Yellen speaks to journalists. 

The United States is prepared to sanction Chinese banks and companies, as well as Beijing's leadership, if they assist Russia's armed forces with the invasion of Ukraine, U.S. Treasury Secretary Janet Yellen said Monday.

"We stand ready to act if we see significant violations, especially by financial institutions," Yellen said in an interview with CNBC's Sara Eisen in Beijing. "Anything that involves aiding Russia's military in their brutal war against Ukraine is unacceptable to us and we have the ability to sanction it."