President Biden is thinking about sending thousands of U.S. troops to Eastern Europe to deter Russia from invading Ukraine. Will the plan work or will it provoke Russian President Vladimir Putin? And cases of coronavirus are dropping rapidly in parts of the country. Why do scientists avoid saying we're near the pandemic's end? Plus, former vice-presidential candidate Sarah Palin is suing the New York Times. What does the case say about the freedom of the press to be wrong?